Just my two bits in, but I've had bounce for the past three years, since the truck was new. . Tire pressure didn't seem to make much difference, but... and BUT... it's a 2500 with towing package,. . it likes a load! Just a half ton ow wood in the back makes a difference! Plus, it didn't do a much to the fuel mileage. . Gotta get new tires anyway before winter sets in<G>