Why does my tire lose air?
08-09-2013 | 12:09 PM
#1
Thread Starter
Nordschleife Master
Joined: Aug 2005
Posts: 5,147
Likes: 10
From: Spring, Texas (The Woodlands)
Why does my tire lose air?
My car can sit for a week in my garage, & the air pressure remains the same, but if I drive it the ~18 miles to work, & then check it before I leave, it will be down between 5-8 psi, this has happened more than once.
Anybody have any ideas?
Cam
Anybody have any ideas?
Cam
08-09-2013 | 12:30 PM
#3
Three Wheelin'
Joined: Jul 2010
Posts: 1,809
Likes: 14
From: Miami, FL
I second that :/
Check the valve stem, had that happen on my last car drove me nuts and even dealer could not figure out. Finally turned out was a valve stem as tire rotated or heated up would leak but just sitting there in right position did not.
Check the valve stem, had that happen on my last car drove me nuts and even dealer could not figure out. Finally turned out was a valve stem as tire rotated or heated up would leak but just sitting there in right position did not.
08-09-2013 | 12:45 PM
#4
Race Director
Joined: Sep 2012
Posts: 10,423
Likes: 214
From: SOcialist republic of CALifornia
Could also be a puncture with an exposed nail or screw head...when you roll over it, a little air escapes.
I diagnosed just such an intermittent slow leak in my 'Vette with a trip to the drag strip. The first burnout and resulting display of sparks made it clear that the issue was something stuck through the tread.
I diagnosed just such an intermittent slow leak in my 'Vette with a trip to the drag strip. The first burnout and resulting display of sparks made it clear that the issue was something stuck through the tread.
08-09-2013 | 12:46 PM
#5
Racer
Joined: Aug 2013
Posts: 254
Likes: 5
From: Oakdale, CA
Yes, check the valve stem. I had a very similar "slow" leak. Took it to the local tire shop, removed the wheel and sunk it in the water bath. Tiny tiny bubbles could be seen leaking from the valve stem where the rubber meets the metal thread (that retains the cap).
08-09-2013 | 01:23 PM
#6
Thread Starter
Nordschleife Master
Joined: Aug 2005
Posts: 5,147
Likes: 10
From: Spring, Texas (The Woodlands)
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08-13-2013 | 09:38 PM
#11
Three Wheelin'
Joined: Jan 2007
Posts: 1,336
Likes: 2
From: Somewhere in CT
-Eric
08-14-2013 | 08:41 AM
#13
Thread Starter
Nordschleife Master
Joined: Aug 2005
Posts: 5,147
Likes: 10
From: Spring, Texas (The Woodlands)
Yep, they will fix em free here as well, just need to find time to take it in....
08-14-2013 | 04:17 PM
#14
Burning Brakes
Joined: Jan 2008
Posts: 1,138
Likes: 8
From: Richmond, VA
+1 on the crack especially if you have 18"s. Every time the tire rotates the crack flexs and opens a bit so air escapes. That's a lot of loss for 18 miles. A valve stem would leakall th etime, not just when rotating. Replaced a wheel with a crack, same symptoms.