ohio79

Yeah I'd agree if I ran stock 32" tires. I kept those babies at 35-37 cold. I monitor them almost to much but I'm shooting for the "perfect" mpg/ride quality/tread wear. I learned a lot from members on the forums and take their advice (suggestions) along with my own experiences. I'll try and lower alittle lower and see if I like the ride and of course check the psi

Ajkaz

Unfortunately no tire design engineers have ever seemed to chime in on these threads. They didn't test the tires in anything other than an OEM or Max Load situation. I am not running the door jam pressure on my 37s, they'd be hard as a rock. A good starting point could be to take the OEM LB/PSI ratio of the tire at the given psi from Jeep and use it to reflect in your application. From there add psi as you've added weight to the Jeep. That puts my 37s around 25psi, I run them at 27psi and the ride is perfect, and the tires hit 29-30 when hot and wear evenly.

jedg

Chalk test. Everyone else's answer is going to be wrong (or very likely wrong) for your vehicle. What pressure you run at is influenced by the weight of your vehicle and the width of your rim. Chalk test.

hair2831

I've run my 35" km2's between 27-30psi for the life of the tires and I rotate them every 3-5k miles. I currently have 67k miles on them with a good bit of treadlife still to go.

ohio79

I did just that and ended settling on 26 psi cold. Seem to be smoother on the bumps for a solid axle. I used the AEV procal to adjust so no more idiot light. Now I need to get this thing on the trails. Thanx again forum members!