I have a Wright Stander and it is constantly leaving black tire rubber marks on customers driveways. It's not mud, it usually happens whenever I make a turn, even a very wide turn. Should I adjust tire pressure? I'm 6' 2" and weigh 200 lbs, is that to much weight? I sure hope not. I try to avoid turns on driveways or sidewalks but sometimes its unavoidable. What should I do? Jhawk71 By the way its a 48"