My right rear newly tire keeps losing air pressure very slowly. I recently put on new Kinesis k18 wheels and moved my tires over. Shouldn't be a problem right? The left rear is holding air perfectly, but for some reason, the right seems to seep very slowly. It's a 285 on an 11-inch wheel. Eventually, I will go to 195 or something wider. Anyway, I took it down and had it checked the first time it was low and found air leaking from the bead. The tire was re-seated and thoroughly checked for leaks. Nothing. 5 days later the tire was flat again. Took it down and filled it back up. Put it in a tank and submerged every part of the wheel and found no leaks!!! Today i woke up to find the tire pressure low........ ?????
any ideas about what is going on here or what I should do?
thanks.

 

Spray a water/dish soap solution over the tire and look for bubbles. That should help you locate a leak.
On my last tire change, I got a bad valve stem installed and had a slow leak from it.
Check this article why does a brand new tire lose air pressure and leak air?
https://drivingpress.com/brand-new-t...re-causes-fix/