What size tire using 15x6 wheel?
Here's a real example.
67 Barracuda, currently has old Cragar14x6 wheels. I measured the backspace at 3.75 and the tire is a 215 70 14.
The offset must be +.25.
I want to put on 15" steel wheels:
Wheel Vintiques 63 Series O.E. Chrysler Black Wheels 63-5654334
15x6, backspace 3.75, offset +6 mm.
It appears the backspace is the same on both wheels. My understanding is you don't have to consider offset when determining backspace on new wheels.
As the tire is already close turning the wheel lock to lock, my thought process is if I stay within the 215 70 14 size I'll be ok.
So, the closest available tire, Cooper as I already have them on the back, is a 215 65 15. It is within 0.1" in height, same width.
Did I do that correctly?