I have seen some posts stating that 17X8 with 4 1/2" of backspacing fits on the front, but what about the rear? Most of the posts are ElCaminos with fat 17's. What is the max for the 68 Chevelle rear, 17X9 1/2 with 5 1/2 " of backspacing? It has the factory 12 Bolt rearend. How about tire sizes? Looking for something close to 26" in diameter.

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I used to have 315/35/17's on the rear of my 68, w/ 17x9.5". 5.5" of back space. They rubbed slightly on hard turns. They rubbed even more with the kiddies in the back seat and a trunk load.
I now have 285/40/17. they are about 26" tall.

http://www.chevelles.com/showroom/mild68ss/Hotchkisstance.jpg

I just put 17x9.5 Eagle Alloy 211's, 5.5 bs, Kumho 285/40R17's on the rear of my 68 coupe. They fit perfectly. Any larger would probably require rolling the fender lip, at least on my car. Stock 12 bolt.
Cheers
Steve

Thanks Guys!

Hi,i have a brand new set of Boyd Coddington Magneato rims with tires for sale,they are brand new,on the car for a week only,decided to go with Budniks so i`m selling them,they are 17x8 all around with 245/45/17 in the front and out back i have 265/45/17 brand new Khumo tires all around,the front backspacing is 4.5 and the rear is 5.5 fit perfect without any rubbing,i`m asking $1500 for the set,i payed $1500 for the wheels only and the tires were $150 each,let me know if you are interested.

Thanks