I'm running 15 x 10 on rear with 5.5 B.S. no problem. 295 50 on it and they barely clear the wheel well molding. Had to grind down molding a little for rubbing issue when someone sits in the back and you get on it. I was told 15 x 9 needs 5 B.S. And 15 x 8 needs 4.5 B.S. while 15 x 7 uses 4.25 B.S. Hope that helps. And the deep dish 15 x 10 where bought from wheel vintiques. And they look awesome.
So did the pics ever make it. This is very old but who was the manufacturer of making the custom backspace for 20 bucks? I read this whole thread and the 4.25 is problematic.
