8" Wide Rims - What back spacing for 68 GTO? - Looking to run 275/60/15 drag radials
 

Hi - With 8" Wide Rear Rims, what back spacing do the rims need to be for 68 GTO? - Looking to run 275/60/15 drag radials.

Thanks,
Chris

4.5 , you may be able to get away with 4.


.

4.5 , you may be able to get away with 4.


..

I run 4.5.

What size and brand tire do you have?

Thanks

Exact same tires you speak of.

Thanks PunchT37

I have 4.75 on 15x8 wheels with 275/60r15 tires on my 68 GTO.

Have 4.25 BS with Hoosier 275 DR’s with the car lowered 2”. Real tight fit on the outside of the wheel well. 4.5 or even 5” would be a better fit.
The Hoosiers are about 1/2” shorter than MT 275’s so I don’t think those would fit unless the back of the car was lifted a little.