On the 76 Charger it was the center of the rim that hit the hub. It wouldn't go on far enough to come into contact with the caliper. The Road Wheels were the original ones on my 73 Challenger. There were scrape marks on the inside of the wheel where the hub was rubbing. I remember because I put the rears on first. Then I got to the fronts and they wouldn't go on. Wish I'd have tried the fronts first. The Road Wheels are very narrow in the center on the back.