aspec07

i just got this new tires installed few months ago, but rencently, three of them is leaking air slowly, approximately 5psi a day by just sitting there. any idea?

rominl

iTrader: (4)

where is the leak? where they meet the rims? around the valve stem area?

jmcraney

There are several possible explanations for the leaking tires that you are experiencing. A likely cause is the TPMS sensors. Most experienced tire firms rebuild the valve stems with a refurbishment kit that cost about $2 per stem when they replace the tires on cars that have the "direct measuring" TPMS sensors (the LS460s use a direct TPMS). Perhaps the firm that replaced your tires recently failed to rebuild the stems or didn't do it correctly. It is very easy to see if the stems are leaking - just apply a solution of dishwashing detergent and water and look for bubbles.

Silverpaws

If 3 of them are leaking and you haven't had problems with the rims before, it sounds like it may be an installation problem such as the TPMS sensors mentioned above or have you checked to make sure the correct tire size was used?

aspec07

ok will try the dishwashing detergent. So if is the valve stems i gonna have to unmount these tires to fix the problem?

aspec07

not sure will find that out later with soap i guess

jmcraney

I think the answer is Yes. And you will also need some specialized tools, like a micro torque wrench. Might be wise to get a quote from Discount Tire or Costco or Sam's Club or somebody like that. A Lexus dealer could do this but would probably be expensive.

jayclapp

I would think the tire dealer you bought the tires from would be willing to look at your problem and fix it.