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

18"rear wheels

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Old Jun 23, 2008 | 12:53 PM
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calracer
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Default 18"rear wheels

I'm looking at a set of of polished Corvette Y2K (Thin spoke) wheels for buy. They are 17x8.5" fronts and 18x9.5" rears for mr 93 6 speed.
Would they mess up my speedometer reading?
Currenly I have the stock rims.Thanks
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Old Jun 23, 2008 | 12:58 PM
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From: St Marys GA
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Your rear wheels are 285/40-17, and fronts are 255/45-17 (or that's what TireRack says). Using one of the online tire calculators, that means with 9.5" rear wheels you should get 285/35-18. Your speedometer will read 0.5% too fast with that combo, which is negligible. For the fronts, just stick with 255/45-17.
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Old Jun 23, 2008 | 08:00 PM
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calracer
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Thanks I will.
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