Any ideas out there about how much fender clearance I need for race slicks due to expansion of the tire. Not even sure if thats an issue for a car in the 120 mph range. I put my M&H tires on this week after Vaughn thought it might be a good idea. He was right, it is pretty close on one side. I may need to do surgery, but would rather not if I can keep from it. I have good clearance, except on the bottom rear edge. Thanks.