back spaceing on cragar is 4.25 too much for a 82 regal

[1972cutlass]

Im looking at some 15 in x 8 in., 5 x 4.5/4.75/5 in. Bolt Circle, 4.25 in. Backspac. I know 3.75 inch back space works and have heard 4 inch backspaceing is the best but im not shure if 4.25 inch back spaceing will work. Cragar also does custom back spaceing just cost more. Whats the best back spaceing? I have had 14x7 cragar ss rims a while back and they had 3.75. They also sell some 15x8 cragar rims and they have a 2.5 inch back space and i wonder if i get these will i have tire rubind issues on the frame?

 

[Blake442]

4" backspace is best.
If you want to run a 4.25" backspace, you'll need to use a 1/4" spacer.

 

[81GrandPrix383]

Im looking at some 15 in x 8 in., 5 x 4.5/4.75/5 in. Bolt Circle, 4.25 in. Backspac. I know 3.75 inch back space works and have heard 4 inch backspaceing is the best but im not shure if 4.25 inch back spaceing will work. Cragar also does custom back spaceing just cost more. Whats the best back spaceing?

You should be fine with the 4.25" backspacing.
If you go to the turbo buick site there are guys running 4.5" and 5" backspacing on 10" wide wheels.

Check this out, it will make you drool.
http://www.turbobuick.com/forums/brakes ... m-off.html

 

[JBreu]

15x8" wheels with 3.5 backspace is a perfect fit..........Any more then that, you'll need a spacer 8)

 

[Randy_W]

That can't be right, I ran both Cragar 390's in 15 x 8 with 4.5" backspace and Boyd's Smootie 2's in 17 x 8 with 4" backspace and both worked fine.