Front Rubbing - Tires, Suspension or Wheels?

A tire over 26 inches tall will fit on the front of an a body. (Maybe not a barracuda)
Cause I had 225-70-15 on 15x7 wheels with 4 1/4 inch backspace on the front of my 73 340 Duster with no rubbing and that is a 27.5 inch tall tire that looked great with the 275-60-15s on the same spec wheel out back.