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Old Jun 24, 2019 | 06:45 PM
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Wheel Issue 1990 c4 Convertible
I purchased 4 new After Market 17x9.5 inch to fit the 4 stock 17x9.5 stock wheels. The rear set fits fine but the front does not have sufficient clearance above the front ball joints. A 3/4 inch wheel spacer on each wheel will correct this. Is this an acceptable solution?
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Old Jun 24, 2019 | 07:13 PM
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I am surprised that they do not fit. I run 17x9.5 stock wheels on my 1990 with no issues. Is the offset on the new wheels correct? The wheel would not fit over the suspension but with the stock offset it sits about one half inch from the front suspension. It is the offset that is key.
Spacers will work but it sounds like the wheels are not the correct ones with proper offset.
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Old Jun 24, 2019 | 08:27 PM
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post a link to the wheels you bought so folks can see the offsets
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Old Jun 24, 2019 | 08:50 PM
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Originally Posted by drcook
post a link to the wheels you bought so folks can see the offsets
Yes offset is 56 mm which seems to be standard for that year. Wheels are from OE Wheels. Part no. 4750784 :

http://www.oewheelsllc.com/corvette-...474.1559313773
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Old Jun 24, 2019 | 09:07 PM
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56 mm
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Old Jun 24, 2019 | 10:44 PM
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Those should fit with no issues. Is it possible a PO made suspension changes?
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Old Jun 24, 2019 | 10:52 PM
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Offset is cast into the rear of the wheel. Post the info off of the wheel - maybe you've just a packaging problem and also post a snapshot of the front suspension with a wheel removed.
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Old Jun 25, 2019 | 06:20 AM
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I have the same style wheels from them (mine are black centered though). They should fit.

Have you tried other wheels on that front position, or did you only try one wheel and discovered it wouldn't fit.
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Old Jun 25, 2019 | 12:55 PM
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Originally Posted by Fiberbundle
Those should fit with no issues. Is it possible a PO made suspension changes?
Very possible but have no knowledge. The existing wheels are 17x9.5 and fit perfectly. Could these be a zero offset? They are original factory wheels.
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Old Jun 25, 2019 | 01:17 PM
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Originally Posted by DonM1
Could these be a zero offset?
This should help you.
https://www.4wheelparts.com/a/tire-w...et-backspacing
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Old Jun 25, 2019 | 01:38 PM
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Originally Posted by DonM1
Very possible but have no knowledge. The existing wheels are 17x9.5 and fit perfectly. Could these be a zero offset? They are original factory wheels.
You need to get off the A$$ and get info on wheel back-side and post a snapshot of suspension with 'wheel off'! You've got 2 threads started regarding these. It's impossible for anyone to just guess!! It's your turn to present valid information!!
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Old Jun 26, 2019 | 11:33 AM
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Ahem. Zen attitude is a good thing.


DonM1, how about a few pictures showing the problem and setup?
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