wheel and tire size

I'm going to try again and see if I can get an answer. I'd like to put 15 " rims on my 68 Dart. The brakes are off a 73 Dart, large bolt pattern and I've got a problem with the tires rubbing on the fender bottoms. The tires "just" touch where the wheel well molding ends at the bottom of the wheel well. Any suggestions?

What size tires, front and rear?

Where is it rubbing, front or rear?

What width wheel, front and rear?