i bought a pair of used 18" michelin tires with rims for a crossfire. after i placed the tires in the back because i use them for winter driving i noticed than one of the tires deflates from 35 psi down to around 19 psi and it stays deflated around 19 psi. What should i do ? Is there easy fix for this?

 

It has a leak.
Take it to a good tire shop and have it repaired.

 

but if it has a leak shouldn't the tire completly deflate??? my only goes down to 19 psi.

 

Have them also check the Bead...

Happy Motoring.

 

I was just told by Chrylser that the tires can rarely be repaired. My left-front leaks down to about 27 from 32...

 

Don't ask a car dealer about tires - ask a tire dealer. Go to your local Goodyear store and believe me, they will find the leak. If it's repairable, they will patch it from the inside and it will be fine. If it's on the sidewall, they may tell you that it can't be repaired.

 

I just went through the same problem. My tire pressure sensor light would come on almost every 6 to 7 days. I would check the tire pressure and find that all of the tires were very close to the correction p.s.i., but the driver's side rear was down to 25 pounds from the last time I filled it to 33 p.s.i.

I took it to a tire dealer and they found a small nail in center of the tread. It's been a couple of weeks now and the tire seems to be holding its pressure. I'm betting you have a small nail or something in your tire or you have a leaking valve stem. Definitely get your car to a tire shop and get it looked at.

 

Yep, take it to your local tire guy, screw what the stealers say.
My local Goodyear guy doesn't even have a problem workin on Contis !

My two centavos,

 

Just in case no one has said it yet...

Take your car to any tire repair place and have them check it for leaks.

My Michs had 2 plugs and 1 patch on 2 of the tires.

Firestone, Goodyear, it doesn't matter.
It will be $6-$9 for a plug and ~ $25 for a patch. Patches are always preferred over plugs.

.02

 

~ i like the patch/plug combo... the best of all worlds.

 

use nitrogen instead of air!
its about $10 dollars.
nascar uses it it keeps the tire from expanding holds psi at same psi for a longer time than air.

 

finally got it fixed. went to one shop and they couldn't find anything. went to the second one, and was told that nothing was found again. i asked the guy to check again but to put in about 45 psi and then to check. he comes out in few minutes and finally found the problem. it was letting the air out from the inner side of the rim. guy sealed it and total cost $25.

 

Not gonna help if you have a slow leak...nitrogen has nothing specifically to do with the "time" that a tire will hold a certain pressure level...it has to do with temperature sensitivity. Nitrogen is good for race tires because it's pressure doesn't vary with temperature the way "regular" air (which has a lot of water vapor in it) does...therefore as the tire heats up under race conditions, its pressure doesn't change as much as it would with plain ol' air.

 

N2 would help here in FL where the mornings can be about 40 degrees and the afternoons heat up to about 80 all in one day. I've had my TPMS light go on and off all the time over the course of the day depending on outside temp and if I was on the interstate or not.