• Corolla tire leakage

    From The Real Bev@21:1/5 to All on Sun Jul 24 13:56:53 2022
    2013 Corolla S with the original wheels, tires and pressure sensors.
    There are only 33K miles on the tires and the tread is just fine.Ever
    since I've had it (2016) a single tire loses air very slowly -- it used
    to go from 32 (or 35, I'm not real picky) down to maybe 24, and the
    light would come on. A month or so later the same thing happened. Time between lights is now between one and two weeks.

    Dealer said he couldn't see a problem. (I have no actual proof that he actually looked.) I have a nice plug-in tire pump (the $35 one from
    Harbor Freight; the cheaper one burned up rather quickly when I tried
    to pump all four tires) so there's no real problem, and I'm unwilling to
    load the tire up with slime, but I'd really like to know WTF is
    happening. Sooner or later I'm going to need new tires and it would be
    nice to know if I need a new pressure sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing. People really need to be
    ashamed when they get passed by a granny in a 9-YO Corolla!

    --
    Cheers, Bev
    A man's got to know his limitations.
    It's a woman's duty to make sure of this.

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  • From Ken Olson@21:1/5 to The Real Bev on Sun Jul 24 17:51:55 2022
    On 7/24/2022 4:56 PM, The Real Bev wrote:
    2013 Corolla S with the original wheels, tires and pressure sensors.
    There are only 33K miles on the tires and the tread is just fine.Ever
    since I've had it (2016) a single tire loses air very slowly -- it used
    to go from 32 (or 35, I'm not real picky) down to maybe 24, and the
    light would come on.  A month or so later the same thing happened.  Time between lights is now between one and two weeks.

    Dealer said he couldn't see a problem.  (I have no actual proof that he actually looked.)  I have a nice plug-in tire pump (the $35 one from
    Harbor Freight;  the cheaper one burned up rather quickly when I tried
    to pump all four tires) so there's no real problem, and I'm unwilling to
    load the tire up with slime, but I'd really like to know WTF is
    happening.  Sooner or later I'm going to need new tires and it would be
    nice to know if I need a new pressure sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing.  People really need to be
    ashamed when they get passed by a granny in a 9-YO Corolla!


    Soapy water over the tire to see if you find a leak that way. Take the
    cap off to see if it's from the core.

    --
    ÄLSKAR - Fänga Dagen

    Слава Україні та НАТО

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  • From Scott Dorsey@21:1/5 to All on Sun Jul 24 22:27:04 2022
    Tires with slow leaks not caused by punctures or cracking are:

    1. Leaking through the valve stem
    2. Leaking through the valve core
    3. Leaking through a dirty bead
    4. Leaking through a puncture or crack that you missed.

    I suggest putting a metal cap over the valve and see if that stops it. If
    it's leaking through the valve core, that is not a great permanent fix, but it's a good diagnostic tool and you should keep the metal caps on there anyway because it's cheap protection against future leaks.
    --scott

    --
    "C'est un Nagra. C'est suisse, et tres, tres precis."

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  • From Paul in Houston TX@21:1/5 to The Real Bev on Sun Jul 24 19:45:57 2022
    The Real Bev wrote:
    2013 Corolla S with the original wheels, tires and pressure sensors.
    There are only 33K miles on the tires and the tread is just fine.Ever
    since I've had it (2016) a single tire loses air very slowly -- it used
    to go from 32 (or 35, I'm not real picky) down to maybe 24, and the
    light would come on. A month or so later the same thing happened. Time between lights is now between one and two weeks.

    Dealer said he couldn't see a problem. (I have no actual proof that he actually looked.) I have a nice plug-in tire pump (the $35 one from
    Harbor Freight; the cheaper one burned up rather quickly when I tried
    to pump all four tires) so there's no real problem, and I'm unwilling to
    load the tire up with slime, but I'd really like to know WTF is
    happening. Sooner or later I'm going to need new tires and it would be
    nice to know if I need a new pressure sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing. People really need to be
    ashamed when they get passed by a granny in a 9-YO Corolla!

    If the manual tire gauge agrees with the pressure sensor then the
    pressure sensor is ok. You did not say if it is always the Same tire -
    will assume so.
    Every time I had that problem there has been a nail or screw in the
    tread. The left rear of my Kia had that problem for last two years and
    I finally upped the air pressure to 40+ and soaped it. Found the screw
    and removed it with needle nose pliers and then plugged it.

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  • From The Real Bev@21:1/5 to Paul in Houston TX on Sun Jul 24 17:59:00 2022
    On 7/24/22 5:45 PM, Paul in Houston TX wrote:
    The Real Bev wrote:
    2013 Corolla S with the original wheels, tires and pressure sensors.
    There are only 33K miles on the tires and the tread is just fine.Ever
    since I've had it (2016) a single tire loses air very slowly -- it used
    to go from 32 (or 35, I'm not real picky) down to maybe 24, and the
    light would come on. A month or so later the same thing happened. Time
    between lights is now between one and two weeks.

    Dealer said he couldn't see a problem. (I have no actual proof that he
    actually looked.) I have a nice plug-in tire pump (the $35 one from
    Harbor Freight; the cheaper one burned up rather quickly when I tried
    to pump all four tires) so there's no real problem, and I'm unwilling to
    load the tire up with slime, but I'd really like to know WTF is
    happening. Sooner or later I'm going to need new tires and it would be
    nice to know if I need a new pressure sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing. People really need to be
    ashamed when they get passed by a granny in a 9-YO Corolla!

    If the manual tire gauge agrees with the pressure sensor then the
    pressure sensor is ok.

    The red light just says I NEED AIR. The gauge on the pump and on my
    nifty little talking digital one are never the same -- I've NEVER seen
    two gauges the same, in fact. For one reason, you lose a little air
    each time you check. I wonder if the sensor device itself has a tiny leak.

    Some of the tires have plastic caps, some not. I had a cap on this one originally, but I lost it a while back. No difference. I keep meaning
    to buy some of the metal ones with the core tool, but I forget.

    You did not say if it is always the Same tire -
    will assume so.

    Yes. The others hold air for months with or without cap.

    Every time I had that problem there has been a nail or screw in the
    tread. The left rear of my Kia had that problem for last two years and
    I finally upped the air pressure to 40+ and soaped it. Found the screw
    and removed it with needle nose pliers and then plugged it.

    I'm sure that if the dealer (amazingly enough, and against everything I
    knew about buying used cars for the last 50 years, I bought the car from
    the dealer, and it was the first one I drove when I decided on a 2- or
    3-YO Corolla -- I couldn't see a reason to NOT buy this one!) would have
    found something obvious if he'd bothered to look. They used to do a
    free rotation with the discounted oil change, so there's really no
    reason he shouldn't have given it a visual inspection; I didn't expect
    them to take it off the rim.


    --
    Cheers, Bev
    I'm not saying we should kill all the stupid people, I'm just
    saying let's remove all the warning labels and let the problem
    sort itself out.

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  • From Xeno@21:1/5 to The Real Bev on Mon Jul 25 13:09:36 2022
    On 25/7/2022 10:59 am, The Real Bev wrote:
    On 7/24/22 5:45 PM, Paul in Houston TX wrote:
    The Real Bev wrote:
    2013 Corolla S with the original wheels, tires and pressure sensors.
    There are only 33K miles on the tires and the tread is just fine.Ever
    since I've had it (2016) a single tire loses air very slowly -- it
    used to go from 32 (or 35, I'm not real picky) down to maybe 24, and
    the light would come on.  A month or so later the same thing
    happened.  Time between lights is now between one and two weeks.

    Dealer said he couldn't see a problem.  (I have no actual proof that
    he actually looked.)  I have a nice plug-in tire pump (the $35 one
    from Harbor Freight;  the cheaper one burned up rather quickly when I
    tried to pump all four tires) so there's no real problem, and I'm
    unwilling to load the tire up with slime, but I'd really like to know
    WTF is happening.  Sooner or later I'm going to need new tires and it
    would be nice to know if I need a new pressure sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing.  People really need to be
    ashamed when they get passed by a granny in a 9-YO Corolla!

    If the manual tire gauge agrees with the pressure sensor then the
    pressure sensor is ok.

    The red light just says I NEED AIR.  The gauge on the pump and on my
    nifty little talking digital one are never the same -- I've NEVER seen
    two gauges the same, in fact.  For one reason, you lose a little air
    each time you check.  I wonder if the sensor device itself has a tiny leak.

    Some of the tires have plastic caps, some not. I had a cap on this one originally, but I lost it a while back.  No difference.  I keep meaning
    to buy some of the metal ones with the core tool, but I forget.

    You did not say if it is always the Same tire -
    will assume so.

    Yes.  The others hold air for months with or without cap.

    Every time I had that problem there has been a nail or screw in the
    tread.  The left rear of my Kia had that problem for last two years and
    I finally upped the air pressure to 40+ and soaped it.  Found the screw
    and removed it with needle nose pliers and then plugged it.

    I'm sure that if the dealer (amazingly enough, and against everything I
    knew about buying used cars for the last 50 years, I bought the car from
    the dealer, and it was the first one I drove when I decided on a 2- or
    3-YO Corolla -- I couldn't see a reason to NOT buy this one!) would have found something obvious if he'd bothered to look.  They used to do a
    free rotation with the discounted oil change, so there's really no
    reason he shouldn't have given it a visual inspection;  I didn't expect
    them to take it off the rim.


    A *visual inspection in-situ* will not find a slow leak. All that is
    doing is a scan for the obvious, like a *visible nail*. To do a proper inspection for a slow leak, you really need to remove the wheel and do
    an immersion test. A pressure leak that loses ~10psi over a week will
    show as a bubble every now and then during the test. When I was a wee apprentice, we had a water vat purely for the purpose of leak testing
    tyres. The practice works.

    FWIW, your tyres are getting to the point where I would call them *time expired* or, as they say, past their *use by date*. I have never had the
    issue of tyres time expired, they are typically worn out in 3 to 5
    years. I'd clock up 33 k miles in 2 years, maximum 3, so I've never seen
    a tyre on any of my cars over 5 years old.

    --
    Xeno


    Nothing astonishes Noddy so much as common sense and plain dealing.
    (with apologies to Ralph Waldo Emerson)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From The Real Bev@21:1/5 to Xeno on Sun Jul 24 21:59:12 2022
    On 7/24/22 8:09 PM, Xeno wrote:
    On 25/7/2022 10:59 am, The Real Bev wrote:
    On 7/24/22 5:45 PM, Paul in Houston TX wrote:
    The Real Bev wrote:
    2013 Corolla S with the original wheels, tires and pressure sensors.
    There are only 33K miles on the tires and the tread is just fine.Ever >>>> since I've had it (2016) a single tire loses air very slowly -- it
    used to go from 32 (or 35, I'm not real picky) down to maybe 24, and
    the light would come on.  A month or so later the same thing
    happened.  Time between lights is now between one and two weeks.

    Dealer said he couldn't see a problem.  (I have no actual proof that >>>> he actually looked.)  I have a nice plug-in tire pump (the $35 one
    from Harbor Freight;  the cheaper one burned up rather quickly when I >>>> tried to pump all four tires) so there's no real problem, and I'm
    unwilling to load the tire up with slime, but I'd really like to know >>>> WTF is happening.  Sooner or later I'm going to need new tires and it >>>> would be nice to know if I need a new pressure sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing.  People really need to be >>>> ashamed when they get passed by a granny in a 9-YO Corolla!

    If the manual tire gauge agrees with the pressure sensor then the
    pressure sensor is ok.

    The red light just says I NEED AIR.  The gauge on the pump and on my
    nifty little talking digital one are never the same -- I've NEVER seen
    two gauges the same, in fact.  For one reason, you lose a little air
    each time you check.  I wonder if the sensor device itself has a tiny leak. >>
    Some of the tires have plastic caps, some not. I had a cap on this one
    originally, but I lost it a while back.  No difference.  I keep meaning >> to buy some of the metal ones with the core tool, but I forget.

    You did not say if it is always the Same tire -
    will assume so.

    Yes.  The others hold air for months with or without cap.

    Every time I had that problem there has been a nail or screw in the
    tread.  The left rear of my Kia had that problem for last two years and >>> I finally upped the air pressure to 40+ and soaped it.  Found the screw >>> and removed it with needle nose pliers and then plugged it.

    I'm sure that if the dealer (amazingly enough, and against everything I
    knew about buying used cars for the last 50 years, I bought the car from
    the dealer, and it was the first one I drove when I decided on a 2- or
    3-YO Corolla -- I couldn't see a reason to NOT buy this one!) would have
    found something obvious if he'd bothered to look.  They used to do a
    free rotation with the discounted oil change, so there's really no
    reason he shouldn't have given it a visual inspection;  I didn't expect
    them to take it off the rim.


    A *visual inspection in-situ* will not find a slow leak. All that is
    doing is a scan for the obvious, like a *visible nail*. To do a proper inspection for a slow leak, you really need to remove the wheel and do
    an immersion test. A pressure leak that loses ~10psi over a week will
    show as a bubble every now and then during the test. When I was a wee apprentice, we had a water vat purely for the purpose of leak testing
    tyres. The practice works.

    Works fine for motorcycle and bicycle tubes. Car tires, not so much.
    Easier to just pump the damn thing every couple of weeks. Know anything
    about the effects of Slime on pressure sensors?

    FWIW, your tyres are getting to the point where I would call them *time expired* or, as they say, past their *use by date*.

    So I've been told, but I've never had tires "expire" from anything not involving tread, puncture or -- and this I regard as criminal --
    sidewall bubbles in the defective and obsolete tires the Cadillac (or
    maybe it was Ford, it was quite a while ago) dealer sold to my mom at a premium price and refused to replace, turning the problem over to
    Bridgestone. My Ducati's tires held air for at least 20 years in spite
    of visible crackling on the sidewalls. Probably more because I don't
    know when the previous owner bought them.

    I have never had the
    issue of tyres time expired, they are typically worn out in 3 to 5
    years. I'd clock up 33 k miles in 2 years, maximum 3, so I've never seen
    a tyre on any of my cars over 5 years old.

    They don't get much wear at 3K miles/year.

    --
    Cheers, Bev
    "I just realized how bad the economy really is. I recently
    bought a new toaster oven and as a complimentary gift,
    I was given a bank." -- L. Legro

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  • From Xeno@21:1/5 to The Real Bev on Mon Jul 25 16:30:50 2022
    On 25/7/2022 2:59 pm, The Real Bev wrote:
    On 7/24/22 8:09 PM, Xeno wrote:
    On 25/7/2022 10:59 am, The Real Bev wrote:
    On 7/24/22 5:45 PM, Paul in Houston TX wrote:
    The Real Bev wrote:
    2013 Corolla S with the original wheels, tires and pressure
    sensors. There are only 33K miles on the tires and the tread is
    just fine.Ever since I've had it (2016) a single tire loses air
    very slowly -- it used to go from 32 (or 35, I'm not real picky)
    down to maybe 24, and the light would come on.  A month or so later >>>>> the same thing happened.  Time between lights is now between one
    and two weeks.

    Dealer said he couldn't see a problem.  (I have no actual proof
    that he actually looked.)  I have a nice plug-in tire pump (the $35 >>>>> one from Harbor Freight;  the cheaper one burned up rather quickly
    when I tried to pump all four tires) so there's no real problem,
    and I'm unwilling to load the tire up with slime, but I'd really
    like to know WTF is happening.  Sooner or later I'm going to need
    new tires and it would be nice to know if I need a new pressure
    sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing.  People really need to
    be ashamed when they get passed by a granny in a 9-YO Corolla!

    If the manual tire gauge agrees with the pressure sensor then the
    pressure sensor is ok.

    The red light just says I NEED AIR.  The gauge on the pump and on my
    nifty little talking digital one are never the same -- I've NEVER
    seen two gauges the same, in fact.  For one reason, you lose a little
    air each time you check.  I wonder if the sensor device itself has a
    tiny leak.

    Some of the tires have plastic caps, some not. I had a cap on this
    one originally, but I lost it a while back.  No difference.  I keep
    meaning to buy some of the metal ones with the core tool, but I forget.

    You did not say if it is always the Same tire -
    will assume so.

    Yes.  The others hold air for months with or without cap.

    Every time I had that problem there has been a nail or screw in the
    tread.  The left rear of my Kia had that problem for last two years and >>>> I finally upped the air pressure to 40+ and soaped it.  Found the screw >>>> and removed it with needle nose pliers and then plugged it.

    I'm sure that if the dealer (amazingly enough, and against everything
    I knew about buying used cars for the last 50 years, I bought the car
    from the dealer, and it was the first one I drove when I decided on a
    2- or 3-YO Corolla -- I couldn't see a reason to NOT buy this one!)
    would have found something obvious if he'd bothered to look.  They
    used to do a free rotation with the discounted oil change, so there's
    really no reason he shouldn't have given it a visual inspection;  I
    didn't expect them to take it off the rim.


    A *visual inspection in-situ* will not find a slow leak. All that is
    doing is a scan for the obvious, like a *visible nail*. To do a proper
    inspection for a slow leak, you really need to remove the wheel and do
    an immersion test. A pressure leak that loses ~10psi over a week will
    show as a bubble every now and then during the test. When I was a wee
    apprentice, we had a water vat purely for the purpose of leak testing
    tyres. The practice works.

    Works fine for motorcycle and bicycle tubes. Car tires, not so much.
    Easier to just pump the damn thing every couple of weeks.  Know anything about the effects of Slime on pressure sensors?

    FWIW, your tyres are getting to the point where I would call them *time
    expired* or, as they say, past their *use by date*.

    So I've been told, but I've never had tires "expire" from anything not

    Cruise down the freeway on a very hot day at 70mph+ and your mileage may
    vary.

    involving tread, puncture or -- and this I regard as criminal --
    sidewall bubbles in the defective and obsolete tires the Cadillac (or
    maybe it was Ford, it was quite a while ago) dealer sold to my mom at a premium price and refused to replace, turning the problem over to Bridgestone.  My Ducati's tires held air for at least 20 years in spite

    It's not about holding air.

    of visible crackling on the sidewalls.  Probably more because I don't
    know when the previous owner bought them.

    Visible cracking isn't the issue so much as the depth of the cracking.
    Signs of cracking, and the tyre lightening in colour, are signs that the
    tyre is *aging* and losing the chemicals that keep the rubber supple and protected from ozone attack. Tyres that are cracking are showing visible evidence that the rubber is hardening so grip will be negatively affected.

    I have never had the
    issue of tyres time expired, they are typically worn out in 3 to 5
    years. I'd clock up 33 k miles in 2 years, maximum 3, so I've never seen
    a tyre on any of my cars over 5 years old.

    They don't get much wear at 3K miles/year.

    My wife's car does 5k miles per year. It is currently at 30 k miles and
    is 6 years old. When it reaches 10 years old, the tyres will be replaced
    as a set *regardless* of how worn the tread is. FWIW, I don't even run
    tyres down to the minimum *legal* tread depth since I'm not a fan of aqualplaning.

    --
    Xeno


    Nothing astonishes Noddy so much as common sense and plain dealing.
    (with apologies to Ralph Waldo Emerson)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Paul in Houston TX@21:1/5 to The Real Bev on Mon Jul 25 12:24:18 2022
    The Real Bev wrote:
    On 7/24/22 8:09 PM, Xeno wrote:
    On 25/7/2022 10:59 am, The Real Bev wrote:
    On 7/24/22 5:45 PM, Paul in Houston TX wrote:
    The Real Bev wrote:
    2013 Corolla S with the original wheels, tires and pressure
    sensors. There are only 33K miles on the tires and the tread is
    just fine.Ever since I've had it (2016) a single tire loses air
    very slowly -- it used to go from 32 (or 35, I'm not real picky)
    down to maybe 24, and the light would come on.  A month or so later >>>>> the same thing happened.  Time between lights is now between one
    and two weeks.

    Dealer said he couldn't see a problem.  (I have no actual proof
    that he actually looked.)  I have a nice plug-in tire pump (the $35 >>>>> one from Harbor Freight;  the cheaper one burned up rather quickly
    when I tried to pump all four tires) so there's no real problem,
    and I'm unwilling to load the tire up with slime, but I'd really
    like to know WTF is happening.  Sooner or later I'm going to need
    new tires and it would be nice to know if I need a new pressure
    sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing.  People really need to
    be ashamed when they get passed by a granny in a 9-YO Corolla!

    If the manual tire gauge agrees with the pressure sensor then the
    pressure sensor is ok.

    The red light just says I NEED AIR.  The gauge on the pump and on my
    nifty little talking digital one are never the same -- I've NEVER
    seen two gauges the same, in fact.  For one reason, you lose a little
    air each time you check.  I wonder if the sensor device itself has a
    tiny leak.

    Some of the tires have plastic caps, some not. I had a cap on this
    one originally, but I lost it a while back.  No difference.  I keep
    meaning to buy some of the metal ones with the core tool, but I forget.

    You did not say if it is always the Same tire -
    will assume so.

    Yes.  The others hold air for months with or without cap.

    Every time I had that problem there has been a nail or screw in the
    tread.  The left rear of my Kia had that problem for last two years and >>>> I finally upped the air pressure to 40+ and soaped it.  Found the screw >>>> and removed it with needle nose pliers and then plugged it.

    I'm sure that if the dealer (amazingly enough, and against everything
    I knew about buying used cars for the last 50 years, I bought the car
    from the dealer, and it was the first one I drove when I decided on a
    2- or 3-YO Corolla -- I couldn't see a reason to NOT buy this one!)
    would have found something obvious if he'd bothered to look.  They
    used to do a free rotation with the discounted oil change, so there's
    really no reason he shouldn't have given it a visual inspection;  I
    didn't expect them to take it off the rim.


    A *visual inspection in-situ* will not find a slow leak. All that is
    doing is a scan for the obvious, like a *visible nail*. To do a proper
    inspection for a slow leak, you really need to remove the wheel and do
    an immersion test. A pressure leak that loses ~10psi over a week will
    show as a bubble every now and then during the test. When I was a wee
    apprentice, we had a water vat purely for the purpose of leak testing
    tyres. The practice works.

    Works fine for motorcycle and bicycle tubes. Car tires, not so much.
    Easier to just pump the damn thing every couple of weeks.  Know anything about the effects of Slime on pressure sensors?

    FWIW, your tyres are getting to the point where I would call them *time
    expired* or, as they say, past their *use by date*.

    So I've been told, but I've never had tires "expire" from anything not involving tread, puncture or -- and this I regard as criminal --
    sidewall bubbles in the defective and obsolete tires the Cadillac (or
    maybe it was Ford, it was quite a while ago) dealer sold to my mom at a premium price and refused to replace, turning the problem over to Bridgestone.  My Ducati's tires held air for at least 20 years in spite
    of visible crackling on the sidewalls.  Probably more because I don't
    know when the previous owner bought them.

    I have never had the
    issue of tyres time expired, they are typically worn out in 3 to 5
    years. I'd clock up 33 k miles in 2 years, maximum 3, so I've never seen
    a tyre on any of my cars over 5 years old.

    They don't get much wear at 3K miles/year.

    The tire pressure sensor is part of the valve stem.
    It may not let you inject the goo.
    But if it does it may goo up the sensor.
    Rock Auto $30-$45.

    If it is a nail / screw it may be difficult to find.
    Could never visually find them on my cars. Always had to over pressure
    then soap bubble.

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  • From The Real Bev@21:1/5 to Xeno on Mon Jul 25 22:18:23 2022
    On 7/24/22 11:30 PM, Xeno wrote:
    On 25/7/2022 2:59 pm, The Real Bev wrote:
    On 7/24/22 8:09 PM, Xeno wrote:
    On 25/7/2022 10:59 am, The Real Bev wrote:
    On 7/24/22 5:45 PM, Paul in Houston TX wrote:
    The Real Bev wrote:
    2013 Corolla S with the original wheels, tires and pressure
    sensors. There are only 33K miles on the tires and the tread is
    just fine.Ever since I've had it (2016) a single tire loses air
    very slowly -- it used to go from 32 (or 35, I'm not real picky)
    down to maybe 24, and the light would come on.  A month or so later >>>>>> the same thing happened.  Time between lights is now between one >>>>>> and two weeks.

    Dealer said he couldn't see a problem.  (I have no actual proof
    that he actually looked.)  I have a nice plug-in tire pump (the $35 >>>>>> one from Harbor Freight;  the cheaper one burned up rather quickly >>>>>> when I tried to pump all four tires) so there's no real problem,
    and I'm unwilling to load the tire up with slime, but I'd really
    like to know WTF is happening.  Sooner or later I'm going to need >>>>>> new tires and it would be nice to know if I need a new pressure
    sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing.  People really need to >>>>>> be ashamed when they get passed by a granny in a 9-YO Corolla!

    If the manual tire gauge agrees with the pressure sensor then the
    pressure sensor is ok.

    The red light just says I NEED AIR.  The gauge on the pump and on my >>>> nifty little talking digital one are never the same -- I've NEVER
    seen two gauges the same, in fact.  For one reason, you lose a little >>>> air each time you check.  I wonder if the sensor device itself has a >>>> tiny leak.

    Some of the tires have plastic caps, some not. I had a cap on this
    one originally, but I lost it a while back.  No difference.  I keep >>>> meaning to buy some of the metal ones with the core tool, but I forget. >>>>
    You did not say if it is always the Same tire -
    will assume so.

    Yes.  The others hold air for months with or without cap.

    Every time I had that problem there has been a nail or screw in the
    tread.  The left rear of my Kia had that problem for last two years and >>>>> I finally upped the air pressure to 40+ and soaped it.  Found the screw >>>>> and removed it with needle nose pliers and then plugged it.

    I'm sure that if the dealer (amazingly enough, and against everything >>>> I knew about buying used cars for the last 50 years, I bought the car >>>> from the dealer, and it was the first one I drove when I decided on a >>>> 2- or 3-YO Corolla -- I couldn't see a reason to NOT buy this one!)
    would have found something obvious if he'd bothered to look.  They
    used to do a free rotation with the discounted oil change, so there's >>>> really no reason he shouldn't have given it a visual inspection;  I
    didn't expect them to take it off the rim.


    A *visual inspection in-situ* will not find a slow leak. All that is
    doing is a scan for the obvious, like a *visible nail*. To do a proper
    inspection for a slow leak, you really need to remove the wheel and do
    an immersion test. A pressure leak that loses ~10psi over a week will
    show as a bubble every now and then during the test. When I was a wee
    apprentice, we had a water vat purely for the purpose of leak testing
    tyres. The practice works.

    Works fine for motorcycle and bicycle tubes. Car tires, not so much.
    Easier to just pump the damn thing every couple of weeks.  Know anything >> about the effects of Slime on pressure sensors?

    FWIW, your tyres are getting to the point where I would call them *time
    expired* or, as they say, past their *use by date*.

    So I've been told, but I've never had tires "expire" from anything not

    Cruise down the freeway on a very hot day at 70mph+ and your mileage may vary.

    involving tread, puncture or -- and this I regard as criminal --
    sidewall bubbles in the defective and obsolete tires the Cadillac (or
    maybe it was Ford, it was quite a while ago) dealer sold to my mom at a
    premium price and refused to replace, turning the problem over to
    Bridgestone.  My Ducati's tires held air for at least 20 years in spite

    It's not about holding air.

    I'd say that's a bare minimum :-)

    of visible crackling on the sidewalls.  Probably more because I don't
    know when the previous owner bought them.

    Visible cracking isn't the issue so much as the depth of the cracking.
    Signs of cracking, and the tyre lightening in colour, are signs that the
    tyre is *aging* and losing the chemicals that keep the rubber supple and protected from ozone attack. Tyres that are cracking are showing visible evidence that the rubber is hardening so grip will be negatively affected.

    No visible cracking or color change. That's kind of amazing, given the
    SoCal air quality.

    I have never had the
    issue of tyres time expired, they are typically worn out in 3 to 5
    years. I'd clock up 33 k miles in 2 years, maximum 3, so I've never seen >>> a tyre on any of my cars over 5 years old.

    They don't get much wear at 3K miles/year.

    My wife's car does 5k miles per year. It is currently at 30 k miles and
    is 6 years old. When it reaches 10 years old, the tyres will be replaced
    as a set *regardless* of how worn the tread is. FWIW, I don't even run
    tyres down to the minimum *legal* tread depth since I'm not a fan of aqualplaning.

    I've got a year to go, then. I'm amazed that the Corolla still feels 'new'.

    --
    Cheers, Bev
    "Some people are alive only because it is illegal to kill them."
    -- Lionel

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Xeno@21:1/5 to The Real Bev on Tue Jul 26 21:51:26 2022
    On 26/7/2022 3:18 pm, The Real Bev wrote:
    On 7/24/22 11:30 PM, Xeno wrote:
    On 25/7/2022 2:59 pm, The Real Bev wrote:
    On 7/24/22 8:09 PM, Xeno wrote:
    On 25/7/2022 10:59 am, The Real Bev wrote:
    On 7/24/22 5:45 PM, Paul in Houston TX wrote:
    The Real Bev wrote:
    2013 Corolla S with the original wheels, tires and pressure
    sensors. There are only 33K miles on the tires and the tread is
    just fine.Ever since I've had it (2016) a single tire loses air
    very slowly -- it used to go from 32 (or 35, I'm not real picky) >>>>>>> down to maybe 24, and the light would come on.  A month or so
    later the same thing happened.  Time between lights is now
    between one and two weeks.

    Dealer said he couldn't see a problem.  (I have no actual proof >>>>>>> that he actually looked.)  I have a nice plug-in tire pump (the >>>>>>> $35 one from Harbor Freight;  the cheaper one burned up rather
    quickly when I tried to pump all four tires) so there's no real
    problem, and I'm unwilling to load the tire up with slime, but
    I'd really like to know WTF is happening.  Sooner or later I'm
    going to need new tires and it would be nice to know if I need a >>>>>>> new pressure sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing.  People really need to >>>>>>> be ashamed when they get passed by a granny in a 9-YO Corolla!

    If the manual tire gauge agrees with the pressure sensor then the
    pressure sensor is ok.

    The red light just says I NEED AIR.  The gauge on the pump and on
    my nifty little talking digital one are never the same -- I've
    NEVER seen two gauges the same, in fact.  For one reason, you lose
    a little air each time you check.  I wonder if the sensor device
    itself has a tiny leak.

    Some of the tires have plastic caps, some not. I had a cap on this
    one originally, but I lost it a while back.  No difference.  I keep >>>>> meaning to buy some of the metal ones with the core tool, but I
    forget.

    You did not say if it is always the Same tire -
    will assume so.

    Yes.  The others hold air for months with or without cap.

    Every time I had that problem there has been a nail or screw in the >>>>>> tread.  The left rear of my Kia had that problem for last two
    years and
    I finally upped the air pressure to 40+ and soaped it.  Found the >>>>>> screw
    and removed it with needle nose pliers and then plugged it.

    I'm sure that if the dealer (amazingly enough, and against
    everything I knew about buying used cars for the last 50 years, I
    bought the car from the dealer, and it was the first one I drove
    when I decided on a 2- or 3-YO Corolla -- I couldn't see a reason
    to NOT buy this one!) would have found something obvious if he'd
    bothered to look.  They used to do a free rotation with the
    discounted oil change, so there's really no reason he shouldn't
    have given it a visual inspection;  I didn't expect them to take it >>>>> off the rim.


    A *visual inspection in-situ* will not find a slow leak. All that is
    doing is a scan for the obvious, like a *visible nail*. To do a proper >>>> inspection for a slow leak, you really need to remove the wheel and do >>>> an immersion test. A pressure leak that loses ~10psi over a week will
    show as a bubble every now and then during the test. When I was a wee
    apprentice, we had a water vat purely for the purpose of leak testing
    tyres. The practice works.

    Works fine for motorcycle and bicycle tubes. Car tires, not so much.
    Easier to just pump the damn thing every couple of weeks.  Know
    anything about the effects of Slime on pressure sensors?

    FWIW, your tyres are getting to the point where I would call them *time >>>> expired* or, as they say, past their *use by date*.

    So I've been told, but I've never had tires "expire" from anything not

    Cruise down the freeway on a very hot day at 70mph+ and your mileage may
    vary.

    involving tread, puncture or -- and this I regard as criminal --
    sidewall bubbles in the defective and obsolete tires the Cadillac (or
    maybe it was Ford, it was quite a while ago) dealer sold to my mom at
    a premium price and refused to replace, turning the problem over to
    Bridgestone.  My Ducati's tires held air for at least 20 years in spite

    It's not about holding air.

    I'd say that's a bare minimum :-)

    Yeah but tyres do that as a matter of course. It's their job.

    of visible crackling on the sidewalls.  Probably more because I don't
    know when the previous owner bought them.

    Visible cracking isn't the issue so much as the depth of the cracking.
    Signs of cracking, and the tyre lightening in colour, are signs that the
    tyre is *aging* and losing the chemicals that keep the rubber supple and
    protected from ozone attack. Tyres that are cracking are showing visible
    evidence that the rubber is hardening so grip will be negatively
    affected.

    No visible cracking or color change.  That's kind of amazing, given the SoCal air quality.

    It is indeed. The ozone at ground level is what does a lot of the
    damage, then there's the heat, the sun does the rest.
    Do you keep it garaged when not in use? That will help preserve it -
    including the tyres.

    I have never had the
    issue of tyres time expired, they are typically worn out in 3 to 5
    years. I'd clock up 33 k miles in 2 years, maximum 3, so I've never
    seen
    a tyre on any of my cars over 5 years old.

    They don't get much wear at 3K miles/year.

    My wife's car does 5k miles per year. It is currently at 30 k miles and
    is 6 years old. When it reaches 10 years old, the tyres will be replaced
    as a set *regardless* of how worn the tread is. FWIW, I don't even run
    tyres down to the minimum *legal* tread depth since I'm not a fan of
    aqualplaning.

    I've got a year to go, then.  I'm amazed that the Corolla still feels
    'new'.

    Hey, it's a Toyota, did you expect different?

    --
    Xeno


    Nothing astonishes Noddy so much as common sense and plain dealing.
    (with apologies to Ralph Waldo Emerson)

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From wws@21:1/5 to The Real Bev on Tue Jul 26 08:02:18 2022
    On Sunday, July 24, 2022 at 3:56:58 PM UTC-5, The Real Bev wrote:
    2013 Corolla S with the original wheels, tires and pressure sensors.
    There are only 33K miles on the tires and the tread is just fine.Ever
    since I've had it (2016) a single tire loses air very slowly -- it used
    to go from 32 (or 35, I'm not real picky) down to maybe 24, and the
    light would come on. A month or so later the same thing happened. Time between lights is now between one and two weeks.

    Dealer said he couldn't see a problem. (I have no actual proof that he actually looked.) I have a nice plug-in tire pump (the $35 one from
    Harbor Freight; the cheaper one burned up rather quickly when I tried
    to pump all four tires) so there's no real problem, and I'm unwilling to
    load the tire up with slime, but I'd really like to know WTF is
    happening. Sooner or later I'm going to need new tires and it would be
    nice to know if I need a new pressure sensor too.

    BTW, I really like the tires (Goodyear Eagle RS-A) -- excellent
    cornering on the road I take to go skiing. People really need to be
    ashamed when they get passed by a granny in a 9-YO Corolla!

    --
    Cheers, Bev
    A man's got to know his limitations.
    It's a woman's duty to make sure of this.

    My last leak was due to a crack in the rim. Welding was tricky so I epoxied it.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From The Real Bev@21:1/5 to Xeno on Tue Jul 26 10:39:15 2022
    On 7/26/22 4:51 AM, Xeno wrote:
    On 26/7/2022 3:18 pm, The Real Bev wrote:

    No visible cracking or color change.  That's kind of amazing, given the
    SoCal air quality.

    It is indeed. The ozone at ground level is what does a lot of the
    damage, then there's the heat, the sun does the rest.
    Do you keep it garaged when not in use? That will help preserve it - including the tyres.

    Nope, it sits outside 24/7. Passenger side is shaded. No idea what the
    former owner did with it.

    I've got a year to go, then.  I'm amazed that the Corolla still feels
    'new'.

    Hey, it's a Toyota, did you expect different?

    I don't actually think about it being 9 years old. It's the newest car
    (age, not birth-year) I've ever owned. Other cars have had 'issues' but
    this tire thing is the only one the Corolla seems to have. The interior
    could be designed better (like TURN THE GODDAM SPEEDOMETER ETC. LIGHTS
    ON ALL THE TIME, not just when the headlights are on, and make the seat
    rise higher -- not everyone is six feet tall!) but I can live with it.

    --
    Cheers, Bev
    The beatings will continue until morale improves

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