I finally got one mounted to check the fitment; 315/35x20 Michelin Pilot Sport 4S on a Factory Repro FR70 10 1/2" wide, 25MM offset. I have at least 1/4" on the RR and 3/8" on the LR. My tightest spot was 3 o'clock on the RR and 9 and 10 on the LR. I wanted the 315 since the diameter is closer to the front tires; 275/40x20. I bought some 6MM spacers, but doubt I will ever need them. I am happy!!!!!!