275/60/15 on rear of Duster/Dart

The rear end is not in the car right now, so to save a bunch of measuring, is anyone running 275/60/15 on the rear of their car. Want to make sure there is enough clearance (mostly width as the tire is around 10" wide). I am running stock, 15 X 6.5 Rallye wheels, which I think are 5.5 back space, on a 1974 Dart Sport. Thanks in advance. Ray
No sweat. Just need 15x8 with 4.25 bs. No rubbing at all.20250802_200354.jpg