I’ve been trying to find the sweet spot for my Hummer H2’s tire pressure. I haven’t pumped up to 39 psi now but the ride is kind of hard. I thought about lowering them, but then the gas mileage will be less and I don’t want them
under inflated. What tire pressure are most of you running?

 

You can not have smoother ride with higher tire pressure. Pick one.

I run 45-50 psi on TA KO2s for less body lean and better mileage and MUCH better front tire tread wear.

 

I run 35 psi in my TA K02s

 

Higher tire pressures have many advantages including better fuel economy, longer tread life, increased load capacity, improvement in steering response, and cornering stability,etc. Also, increase pressures for the cold months to make up for lower temperatures causing lower air pressure(for every 10° Fahrenheit change in air temperature, tire pressures will change about 2%). Change the shocks for a more comfortable ride.