Dart rear tires

The spring perches aren't welded onto my rear yet. I still need to back brace the rear, drop in the drive train, have the driveshaft shortened, add the Caltracs and new shocks, then set the pinion angle and weld on the perches. Right now, the rear is centered and the tires fit, but they are very close to the outer fender lips, which have been rolled.

MtNemoMopar, what brand 275/60/15 tire are you using? Looks like the 15x7 rim draws the tire in quite a bit.