C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

wHEEL SWAP C5 , C4

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Old Dec 10, 2008 | 11:05 PM
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Default wHEEL SWAP C5 , C4

Has anyone swapped stock rear 17" wheels from a c4 with c5 18"wheels . Stock are 17x9.5, backspace 7.5", c5 are 18"x10.5 backspace 8.02....Dont what to buy tires yet unless these are gonna fit...Posted a note in hte other section, no replies yet. Anyfeedback would be greatly appreciated. My vette is a 92 lt1 with 275 40 17s....tHANX JIM
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Old Dec 11, 2008 | 12:50 AM
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Im doin the same thing and I think I may have to put longer wheel studs in and a spacer.
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Old Dec 11, 2008 | 09:14 AM
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Can't comment on the backspacing data, but 88-96 C4s can be fitted with C5 and C6 stock wheels no problem. 84-87's will need spacers.
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Old Dec 11, 2008 | 10:26 AM
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I have my drag radials on stock C5 wheels. They fit fine. I like the look of my ZR1 wheels better, but the C5 wide spoke stock wheels are for the track only, so looks don't matter, speed does.

Only have two pictures, not good ones, but they may help you decide.


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Old Dec 11, 2008 | 05:14 PM
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I have '02 5 spokes on my '96 and they bolted right up with no clearance problems.
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Old Dec 11, 2008 | 10:27 PM
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I just swapped on 4 OEM ZO6 18 x10.5's all around with super wide Dunlop 300/660-18 racing tires. Fronts fit perfect but I am not so sure about the rears, it looks very close between the tire and the trailing arm brackets. Have not test drove it yet.

Last edited by Sidney004; Dec 16, 2008 at 02:39 AM.
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Old Dec 13, 2008 | 12:32 AM
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thanks for the useful info
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Old Dec 14, 2008 | 07:27 PM
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thanks for the feedback ....Just to be safe ordered 275 35 18s for the rear, this keeps my speedo as accurate as possible. Currently running 275 40 17s alll the way around and am very pleased with handling. Try to get some pics up soon ...Thanks again for the quick replies...Jim PS great site www.carbibles.com for sizing conversions etc
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Old Dec 14, 2008 | 09:51 PM
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I am running the wide spoke / wagon wheels, 17"/18" wheel combination.. I got them from a 99 C5, no problem on mounting or driving.
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Old Dec 16, 2008 | 02:39 AM
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Just an update, I resolved the clearance issue on my rear 18 x 10.5 Z06 OEM's with wide Dunlop racing 300/660-18's by using a 3mm spacer(no effect on lugnut engagement) and carefully grinding the trailing arm bracket in the area of potential interference.
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