[Chad from Cleveland]

Hello to all and I hope you are enjoying a very nice Christmas and New Year Season.
Looking for some guidance here. Does anyone know if an aftermarket 15 x 8 Rally Wheel with a 4 1/2" backspace fit comfortably in the rear wheel well of my 67 GTO without rubbing or needing to jack up the car? Something I don't want to do. I am planning on running 225-235 60 or 70 series tires which have not been purchased yet. Your input is gratefully welcomed.

[b-man]

Usually a 5.5” backspace is needed to center the 8” wide wheel from side to side on a ‘67 A-body.

I would say you could likely get away with 5” backspace because of the fairly narrow tires you’re planning to use.

I’d get those wheels modified for deeper backspacing or perhaps ask the vendor to do a custom backspace.

A 225/60 is way too small for the rear, a 235/60 would be the minimum size and would be better on a 15x7” wheel which with 4.5” backspace would solve your problem.

A 15x8” wheel would be best used with either a 255 or 275/60, again with enough backspace

[The Champ]

I agree with b-man, that a 15x7 is the better option with the tire sizes you are considering.

Summit has the Wheel Vintique Rally I wheels in 15x7 with 4.25" BS or the 15x8 with 5" BS.

I have run 235/60's on the front wheels and 255/60's on the rear on my '64 GTO with the 15x7's with 4.25" BS without issue. Currently running 215/55/17's on the front and 245/50/17's on the rear with 17x7's with 4.625" BS. I do have the wider 12 bolt rear, so if you have the correct rear for your '67 GTO you have more room than I do.

First two photos are with the 15's. Last photo is with the 17's.