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Old Jun 27, 2011 | 08:54 PM
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For my C5Z....

CCW SP20s 18x10 front 19x10 rear 295/30/18 fronts 315/30/19 rear

Off a C6 base.
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Old Jun 28, 2011 | 08:36 AM
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Need to find out what the offset of those wheel are, C6 are diff from C5. Not sure on the 315 on a 10 inch wide wheel, the wheel seems a bit narrow to me. CCW wheels are great and I love mine I would just look into those sizes to fit your application. More will chime in and I may be way off.

Darion
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Old Jun 29, 2011 | 08:05 AM
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thanks for the heads up, the vendor has taken the tires off the wheel which is perfect since they wont work on my Z. Guess he had someone else who wanted those.

The rims are C6 Base offsets. Going with the above, would that mean I need a 20mm spacer in the rear to make these work? Am i wrong in assuming the fronts should just bolt up no issues?

I'm going with 275/35/18 upfront and 305/30/19 which are the correct up sizes for the wheels and the car itself.

Can anyone confirm if my calculations on the wheel fitment are correct? thanks!
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Old Jun 29, 2011 | 09:51 AM
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Some people run these wheels without a spacer and are happy with them. Personally I think they sit too far in without a spacer and really throw off the look of the car. Bear in mind that if you use anything more than a 1/4" spacer you'll need longer wheel studs too. You could also look into purchasing a hub adapter with installed studs instead of the spacer...
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Old Jun 29, 2011 | 10:10 AM
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Originally Posted by cdkcorvette7
Some people run these wheels without a spacer and are happy with them. Personally I think they sit too far in without a spacer and really throw off the look of the car. Bear in mind that if you use anything more than a 1/4" spacer you'll need longer wheel studs too. You could also look into purchasing a hub adapter with installed studs instead of the spacer...
cool, thanks! In your opinion, is the 1/4 inch spacer enough or would you suggest going the hub adaptor route? Where could I source these?
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Old Jun 29, 2011 | 10:38 AM
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Originally Posted by GiggityGiggity
cool, thanks! In your opinion, is the 1/4 inch spacer enough or would you suggest going the hub adaptor route? Where could I source these?
Hmmmm.... Really your opinion since it's your car. Like I said, there are some on here who insist that it looks great with no spacer at all. The 1/4" spacers are VERY cheap from summit racing, jegs, and others. I would mount them with no spacer and see how they look, then mount them with a 1/4" spacer and see how they look. If you're happy with the stance leave it alone, if you're not order the adapters (also from summit, jegs or other similar shops)

Also, is your car lowered? I have no idea why, but lowered cars don't seem to need as much of a spacer... Maybe because lowering the car throws the toe angle out some...
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Old Jun 29, 2011 | 10:40 AM
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Also, I'll second 8Vette7 on double checking the width of the rear tire... There's no way a 315 should have been mounted to a 10" rim...
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