im looking at putting coy c5 in gunmetal gray .on my 79 cutlass ,what backspacing do i need to put 17x7 on the front and 17x8 on the rear.im looking at using 255-45-17 and 235-45-17
17 inch coy c5s
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Your pretty much only gonna get them with 4.5 backspace. Lucky for you it should work just fine. It did for me. 
what size wheels do you have on you bu. the c5s list the 17x8 as a 4.5 inch back spacingand the 17x7 list a 4.25 back spacing .and what size tires are you running and haows the clearence on the front and is you bu lowerdany
They are the 17x8 all the way around. I forgot about the 7" wide rim having different backspace. Tires are 235/50 on all four also. No clearance problems. The only lowering would be from running a v8 with v6 springs. Not a lot of drop but it can still go lower.
reason i was asking if you bu has been lowerd ,my cutlass has 2inch drop spindles on the front and 2inch drop springs in the rear from bell tech .im running 15 inch rallys on it right now but im doing a update on my car to pro-touring ..what is the hight off the grond to the fender on my cutlass is 25and a eight on the front and 27inches on the back
The biggest concern I would have is the 255's in the rear. I don't think the cutlass wheelwells are quite as forgiving. You may need to roll the lip. My tires should be just over 26" tall. Here's some pics.
thanks for the pics. im not dead set on the 255s . i was looking at them becase i have 255 -60- 15s on my car right now . im just looking at a tire that will fill the wheelwhell. im looking at the 245s very hard and i may look at the 235-50- 17s like you are running.
The 245's are prolly more of a safe bet. That is most likely what i'll be running next, unless i try to shove some 275/40's on there. The 235/50's are just alittle to tall for how wide they are for my liking, but they were free. Check out your local ford dealers junk tire pile, they were a stock mustang size, that's how i got mine.
When the C5's get on the Cutlass, slap up some pics. I wanna' see that as that's one of the wheels I'm considering.
Also, anyone got any pics of the C55's on a Cutlass or other gbody?
Also, anyone got any pics of the C55's on a Cutlass or other gbody?
as soon as a get them i will it will probley be july or so before i get the wheels.foe the price you cant beat the coys
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