Thread: Tire Pressure

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From my jeep experience you want the tire contact patch to be in full contact across the tread. I run 32x11.5's on my jeep, and anything above 27# they are crowned, and will wear out the middle of the tire, not to mention riding very rough. The tire shop always pumps them up to between 45&50, because they are "truck tires". One trick is to chalk a line across the tread, drive ~100', and see where it is rubbed off. Deflate & repeat until you get an even erasing action, and you have found your ideal balance point for your vehicle weight and the stiffness of that tire. Just my $0.02 - it's worked for me on big bulky tires on a light jeep.

"One trick is to chalk a line across the tread, drive ~100', and see where it is rubbed off. Deflate & repeat until you get an even erasing action, any you have found your ideal balance point for your vehicle weight and the stiffness of that tire. Just my $0.02 - it's worked for me on big bulky tires on a light jeep."

Excellent advice RSPears. I have done the same thing on a few rods that I worked on in the past!