Matt Strebig
Member
Hi, I am wondering if a 225/70/15 tire on a 15X7 rim with 3.75 backspacing will fit fine on a 67 Coronet. I believe it will but am being extra cautious.
Yeah, you are. You can fit a much wider tire than that if you choose.
Try this from now on: Measure the clearance to the body and the leaf springs using the existing wheel and tire that you currently have. Look up the published specs of the tire that you want to use. If the desired tire is 3 inches wider, assume that it will be 1 1/2" added to each side of the current tire. If you have 2 1/4" or more clearance currently, you're fine. 3/4" of clearance is often enough to avoid contact.