I am surprised how tall the tires are that people are using. Maybe I was ultra conservative, but, when I looked to fit new wheels/tires on my 68 Dart, I made a tire-shaped template and checked for clearance to the fenders, control arms, brakes, steering linkage, strut rod, and "frame rail" -- at various combinations of suspension travel (up to full jounce/rebound) and various steering angles (up to full lock). The biggest I could go on an 8 inch wide rim without anything rubbing was 225/35R18. This is about a 24 inch tire, which is the same diameter that the car originally came with when I got it (175/80R13).
