Tire goes flat when it rains - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-28-2006, 11:59 AM   #1
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Default Tire goes flat when it rains

I have a weird problem. About three weeks ago, after it rained, I saw that my rear pass tire was totally flat. I filled it up. For three weeks, I drove it every day, no problem. Yesterday, it rained again and I saw at work that it was totally flat again. I filled it up again and took it home.

At home, I took the tire off and sprayed it with soapy solution all over (including valve stem) but couldn't see any bubbles. Now the rim is still bent in one spot on the inside, but there is no driveability issue or any apparent leak from there.

Any idea why it would happen only when it rains?
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Old 06-28-2006, 12:21 PM   #2
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If the air is leaking out on the rim that is bent, im willing to bet that when it rains, Water gets in between the seal of the tire and rim and then loses the air. I say replace the rim or have it repaired if thats possible.
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Old 06-28-2006, 12:26 PM   #3
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First thing that comes to mind is don't drive in the rain...

Sunny days only.

Seriously.. when the bead seats..it should seal, bent rim or not..once it'* sealed..rain shouldn't effect it.

It'* possible you have Murphy'* Law... you only need to fill it in the pouring rain.
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Old 06-28-2006, 02:06 PM   #4
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Thanks for the chuckle. I am going to get it sealed and monitor whether the tire is leaking any air.
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Old 06-28-2006, 02:07 PM   #5
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why not try to duplicate it, hose it down with soapy water, look for bubbles
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Old 06-28-2006, 02:10 PM   #6
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Quote:
Originally Posted by sonoma_zr2
why not try to duplicate it, hose it down with soapy water, look for bubbles
Quote:
Originally Posted by faisalmali
At home, I took the tire off and sprayed it with soapy solution all over (including valve stem) but couldn't see any bubbles. Now the rim is still bent in one spot on the inside, but there is no driveability issue or any apparent leak from there.
Again?
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Old 06-28-2006, 02:19 PM   #7
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Quote:
Originally Posted by BillBoost37
It'* possible you have Murphy'* Law... you only need to fill it in the pouring rain.
Over the past several years, every flat I've had to change has been in the rain, too.

Have you checked the tread area for any foreign objects, or just around the seal and valve stem?
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Old 06-28-2006, 02:45 PM   #8
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Sometimes a crack can develop in a rim that will only leak when the wheel is on the vehicle, with weight applied at a certain spot. Had that happen on a '61 Bonneville - nearly drove me nuts finding it. Could be your problem, too - the rim only leaks in a certain position and coincidentally for you - it happened to be raining both times.

Just a guess.
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Old 06-28-2006, 02:48 PM   #9
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Quote:
Originally Posted by BillBoost37
Quote:
Originally Posted by sonoma_zr2
why not try to duplicate it, hose it down with soapy water, look for bubbles
Quote:
Originally Posted by faisalmali
At home, I took the tire off and sprayed it with soapy solution all over (including valve stem) but couldn't see any bubbles. Now the rim is still bent in one spot on the inside, but there is no driveability issue or any apparent leak from there.
Again?
not off the car this time, yes, do it again under weight, duh!
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Old 06-28-2006, 04:39 PM   #10
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Quote:
Originally Posted by bill buttermore
Sometimes a crack can develop in a rim that will only leak when the wheel is on the vehicle, with weight applied at a certain spot. Had that happen on a '61 Bonneville - nearly drove me nuts finding it. Could be your problem, too - the rim only leaks in a certain position and coincidentally for you - it happened to be raining both times.

Just a guess.
I agree there... Possibly a cracked rim... The cooler air with the rains may cause the rim to contract and leak... Besides if the rim was bent and you know its bent, why not try to replace that rim and possibly the tire too?

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