Currently I have 155/80R15's. My torsion bars are only 1 turn after they touched so I will need to go up a little more as my tires do slightly rub on a sharp turn. I have not had the car on the road yet just in and out of the garage to turn it around. Im actually thinking about maybe going to a 14" tire and wheel but I will wait and see how it is once on the road.
Rod