tire that I just had installed. I just put on all 4 new Michlen SS tires and the driver side tire loses about 1-2 psi every 10-14 days, any ideas? There is zero punctures.

 

Did they change the valves? I would go back to who you bought them from and have them deal with it.

 

No, the valves were not changed. Should they have been changed? I have the tpms with metal valve covers. I will be taking it back, I was just throwing it out there.....

 

yes, make them dunk the wheel under water. Might be a leak at the tire bead where it seats on the rim. Or the valve. Usually they rip the cores of the valves off to expedite deflating the tire, and subsequently replace them - unless you have nice valves on the rim.

 

As a kid, I worked at a tire shop.
I would do as per the above.

 

Not so tough to check yourself. Assuming it's not a puncture, it's either a poorly seated tire or loose valve core. If you have a valve core tool you can check for tightness. Otherwise, just put some water and a little dishsoap in a spray bottle and spray the valve, and also the tire bead looking for bubbles.

You're not likely able to fix the bead yourself, so you could save time and just go back to the tire shop.

 

Thanks for the feedback guys, I needed new valves, covered under warranty, zero issues! Thanks Mike, Glenn, Lou at Ray Catena!

 

Had the same issue with brand new Michelin PS2s, losing 2-3 psi/week on two tires. After hours of water torture there was nothing apparent. It turned out several of the small rubber stringers (~0.020 dia.) from the mold process were trapped between the tire and rim during the tire mounting. Didn't show up with water/bubble test, I used Snoop (product for pneumatic fitting leak detection, basically fancy soapy water) and micro-bubbles were everywhere at the mold stringers. Tire shop was a bit taken back, had "never seen that before", and also wondering how many other P-car customers had experienced the same problem without an explanation.