On my 68 GTX I ran 15 x 10 with 4.5 back spacing and 28.5 X 10.5's with no problems. then 29.5 X 10.5 was still ok but when i went 11.50 X 29.5 (30.5 high) I had to cut fold over the flange lips now a 5 backspace maybe would not have to??
And that was without relocating the springs!

Last edited by Dodgem; 07/23/11 01:22 PM.