MrTube
Well-known member
I run 50 lbs in my tires. In small printing along the bead it says maximum PSI 55. Firestone on the front, Universal on the back, Interstate on the spare. In general, running your tires harder will make them last longer (now let the comments roll!). I drive a lot on soft gravel roads and there is less pulling with harder tires.
My last truck had I think 245\65\16s on it rated as "load range E" and recommended 80PSI for a loaded truck.
Driving around with 80PSI in the tires on an eempty truck MAY have made the tires last longer, but it would have destroyed me and the truck.