I have a class C motorhome on a Chevy Express 4500 chassis. I have always set the tire pressure to manufacturer specifications prior to an outing except on the last trip. I ran out of time and instead planned to stop at a truck stop and get air there. While driving I noticed that the rig rode smoother, was less jarring, and maybe handled the same or better. Gas mileage did not seem to be affected. Compared to passenger cars, these tires are very high pressure (65 front, 80 rear). The were low by about 6% or 7% when I left. What are the consequences or down sides if I used these reduced pressures going forward?
