I got a new to me set of Goodyear Wrangler MTR 31/10.50-15 Mud Tires of CL. My old set wore really even and lasted 2 years. I just had the new ones mounted and the guy put 40psi in them. Holy $hit they bounce all over the place. What would be the best pressure to run street 90% of the time. I think I only had 25psi in my old set.

How do you do the chalk test also?

 

The easiest way to do it to find the ride you like is let out 5-10 psi of air out at a time till you find the ride you like the best. But for our Jeeps they usually run pretty good on 25-32 psi. Hope this help some.

 

I run 32ish in my tires.

 

-Find somewhere super flat and at least 100' long w/ no obstructions.
-Park somewhere in the middle
-Draw a straight line w/ chalk across your treads
-Drive forward and back, STRAIGHT, about two or three times.
- look at your chalk lines...

You should be able to figure out the rest...