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View Full Version : What size tires fit on 8.5 inch rim



derekhay316
06-02-2004, 10:26 PM
I have 8.5 inch wide 17's on my 89 tbird with 1.5" drop. Just wondering what size of tire i can fit on the back without any spacers? I have some 255 45 series that i can get cheap. Will they rub? Will they even fit on a 8.5" wide rim? Thanks.

93BLKSC
06-03-2004, 05:26 AM
I have some 255 45 series that i can get cheap. Will they rub? Will they even fit on a 8.5" wide rim?
I have 255/50/16's on the stock 7.5" rims. No prob. So if a 255 will go on a 7.5" rim, it will fit even better on a 8.5" rim.

Do you know what the backspacing on your 17's is?

68COUGAR

fast Ed
06-03-2004, 05:37 AM
The stock rims are actually 7" wide, not 7.5". 7" is the minimum rim width for 255-50, so they do get squeezed on a bit.

I had 255-45-17 on ROH 8.5" a few years ago, fit nicely all around, with a 1.5" lowering. That rim width is just about perfect for 255-45 size.

cheers,
Ed N.