Hi I'm new to this post and I have a couple of questions. Does anyone know the biggest wheel and tire combo you can fit in the rear? ('89 Z-28). I seen in the march issue of Car Craft that a guy had a '91 Z-28 that had 8.5 wheels with 28x12.50 slicks, do these fit without any problems? Also what kind of back spacing? Thanks for any help.

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berggren

 

I'm running 17x11's on my rearend with 315/35/17's and 6" offset.
I had to do a little masaging with a hammer
but it fit.
If you're drag racing I'd go with a 15x10" rim with 5.5" backspacing and 26x10.0-15 for tires.
That combo will definetly (99% sure) fit.

 

hey thanks,but how far will these stick out beyond the quarter panel? I would like to stay tucked in if i can.Thanks again.

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berggren

 

I can't say for sure but my best guess is around 1/2" at the most.

I think they'll tuck under completely though.

 

I run 295/50R16's on the stock IROC rims, they do not rub but I did have to work over the inner fender and they do not hang out of the fender at all, actually they are tucked in by about a 1/2-1 inch. I run 26x10.50's at the track...they look like sissy tires compared to my others. I can't decide to go with 325/50R15's hoosiers or the 335/35R17 route...who knows