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Ridler 606 advice please

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Old Dec 24, 2025 | 09:12 PM
  #1  
blackgloves's Avatar
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From: TEXAS
Car: 1987 IROC-Z
Engine: 6.2L
Transmission: Stage III T56
Axle/Gears: 3.73
Ridler 606 advice please

The car currently has some repo C5 Z06 wheels on it with what I believe is 1.75in and 2in wheels spacers. Theyre 17in front, 18in rear.

Im looking to switch to Ridler 606 wheels which are
18x8
4.5in backspace
0mm offset
they're the correct bolt pattern

I should be able to run these without spacers?
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Old Dec 31, 2025 | 02:24 AM
  #2  
LAFireboyd's Avatar
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From: Las Vegas
Car: 1987 Formula (original owner)
Engine: 305 TPI
Transmission: T5
Axle/Gears: 9-bolt/3.45
Re: Ridler 606 advice please

If you haven't found the answer yet, the factory 16x8 front wheel has a zero offset/4.5" backspace, same as you said the 18x8 wheels are that you're looking at, so the answer to your question is yes. They will fit on the front and the rear without spacers.
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