factory back spacing

[Bill M]

I have a opportunity to buy some used rims. I dont want to make a mistake on having them not fit properly.

Was looking for information on what these cars came from the factory for standard wheel back spacing, front and back. Stock cars with no modifications.

Specifically 71-72 B, E, A bodies.

Looking at 15" - 10" 5-1/2 BS and 8" 4" BS

 

[Darter6]

Factory 15x7 were 4 1/4'' back space.That I know for sure as that is what I have.

 

[duster22]

15 x 8 Ramcharger wheels are 4 1/4 . Aftermarket 15 x 8 are 4 1/2. 15 x 10 are usually 5 1/2 aftermarket for Mopars

Frank