I have 15X7 Torque Thrusts 3 3/4bs w/235/60/15's on the back of my 64 Dart. No problems. I've had 255/60/15's on 4 1/4bs rims before. They rubbed occasionally, most up inside the quarter panel...Also using super stock springs on the high setting..
Your Dart looks great with those wheels. Thanks everybody for jumping in, keep 'em coming please, I still can't tell if 15x7 w/4" backspace will work on the front of my 65 Cuda.