18/19’s where the same height as the new tires, road noise above 40 mph is noticeable lower, i believe the older rims are 8.5/10 wide, the new ones are 9/10 wide. I might a slightly wider 255 front on the older rims, using a race only tire, the rear im going to try 305 or 295 with drag slicks to max my 1/4 mile times