tire pressures in desert driving July 19, 2003, 09:09:53 am Yahoo Message Number: 24707My thoughts exactly on pressures. If one goes to the physics books, a rise in temperature of a vessel filled with air @ 80psig would increase pressure somewhat but would not have near the effect on the tire as low pressure flexing. Just because a person is in the highway patrol doesn't make him/her a physics expert. As Andy says, start out at the correct pressure and take it easy if you must travel in desert summer temperatures. You'll all be happier for it.Tim Meyer[Non-text portions of this message have been removed]