8

Possible Duplicate:
How to fix leaky tires after 2 shops couldn't

Ever since I bought my car new I have had one tire that goes to 20psi every 30 days. Discount tire said theres no leak, but obviously something is wrong. Any idea what I can do?

2009 TSX.

Afer a 3rd trip to the mechanic (2nd at dealer) they found a nail in my tire. Apparently the submersion test still didnt help at 70psi inflation. But, he said he found it visually and had nearly missed it again.
Community
  • 1
P.Brian.Mackey
  • 381
  • 1
  • 14

3 Answers3

7

Chances are you have a poor seal between the tyre and the rim. This is normally caused by slight corrosion in the Alloy which then leads to a rough surface which won't seal properly, allowing air to very slowly seep out - It is likely that this won't cause air to escape fast enough to be obvious in a bubble test - after all you're only losing 10psi a month...

The solution is to have the tyre removed and re-fitted with a smear of sealing compound around the edge of the rim, which will help to fill in the rough surface and seal it properly.

edit: While the tyre is off, clean up the beading surface of the rim as well, this will help smooth off the surface and remove any loose dirt or corrosion that has built up around it.

Nick C
  • 28,941
  • 8
  • 56
  • 109
5

Put soap and water in a spray bottle, spray it on the tire and rim, look for bubbles. Also spray on the valve stem as the valve can leak as well.

Move More Comments Link To Top
  • 18,788
  • 5
  • 54
  • 76
4

As an alternative to what user Larry suggests in his answer you can go the bicycle way - detach the wheel (together with the rim) and submerge it into water. This will surely show whether there's an air leak.

Community
  • 1
sharptooth
  • 1,376
  • 4
  • 12
  • 26