Nine years ago I put 205/50R15 on front and 295/50R15 on back, 7" and 8" rims respectfully. I've had no problems what so ever. I have even run at Michigan Speedway on the high banked oval at 140 mph with out any problems. Next time I may go up to 225's and 305's if others have similar stories. Fred Stoye #3366 red '72