I run the door tag pressure most of the time, 58 psi . I value what little remnants of my spine that are left, even with air ride and an air seat, I cringe at every bump . Take 1.5 million miles of big trucks and top that off with the worst kind of arthritis and all the macho done run plum outta me. I'll keep those tires at just as much air as I need . Only time I run them up any higher is when hauling the 5er , I'll run the rear duals up to 80 for short runs, and if we're going long runs where i'm going to fill up the bed tank to where its going to load down the steer axle, i will bring teh steers up to 70-80 depending on if its hot or cold out ( if its hot, I'll go up to 80.. learned about that when turning wrenches at a bus company years ago, the terminal manager had worked for a big tire company for about 40 years, turns out heavily loaded tires will suffer more from friction when its hot out , and end up expanding MORE if inflated LESS to start with , so when running heavy and its hot, you want to start out high to cut the rolling resistance, and reduce the friction, in other words in teh heat a tire starting at 80 psi will expand less than a tire starting at 70 and be less likely to throw a tread ( so a tire starting at 70 will end up HIGHER from the heat friction buildup, but in the cool a tire starting at 70 will expand at the same rate
Considering our fleet had the lowest tire cost per unit around, the guy must have known his stuff
Now for those totally confused go find a wall and beat your head against it
I'm going to try that! After working in a tire shop through college I take pride in having long lasting tires. I notice my centers wear slightly quicker on some of my DD light towing trucks due to being over inflated for the job they do, my hauling trucks just wear out tires lol.
