Original 15" x 7" backspacing

[gsxnut]

What was the original backspacing of a 1970 Buick GS 15" x 7" wheel (WG).

Thanks

I think it was 4 3/8" but not sure.

[n2buick]

Mark, they just happened to have done an article on the ralley wheels in this months Bugle from the BCA. It was very informative, with all the specs from each year.
You are correct, it is 4 3/8" for the WG.

Jeff