71 Duster Wheels

I had 15x7 SBP 4.250 backspace rallyes on the front of my '72 Scamp. Had a clearance issue with the inside lip of the rim rubbing the UCA. Same thing happened on my '64 Valiant with 14x7 rallyes with same backspace. Only happened on the right side during hard right turns or on a cloverleaf under acceleration. I ran a thin 1/8" spacer for a while. Finally went with a 6" wide rallyes on the front of both cars. Just my experience......................