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1985 C4 Wheel Fit

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Old 03-03-2016, 01:51 PM
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J.C4-1985
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Default 1985 C4 Wheel Fit

I just purchased a 1985 Corvette.

I am looking at purchasing 18x9.5 (all 4) chrome 5 stars wheels that say for C6. (Tire size 255/40/18).

The wheel manufacturer will not guarantee fit on 1985. They only say 1988+

I've heard discussions about using adapters. However, the tire shop advised against adapters for some reason. Are adapters safe for the car or change the ride?

Thank you!


Amazon.com: 18-inch Fits Chevrolet - Corvette C6 Aftermarket Wheels - Chrome 18x9.5 - Set of 4: Automotive Amazon.com: 18-inch Fits Chevrolet - Corvette C6 Aftermarket Wheels - Chrome 18x9.5 - Set of 4: Automotive
Old 03-03-2016, 04:57 PM
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gerardvg
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Originally Posted by J.C4-1985
I just purchased a 1985 Corvette.

I am looking at purchasing 18x9.5 (all 4) chrome 5 stars wheels that say for C6. (Tire size 255/40/18).

The wheel manufacturer will not guarantee fit on 1985. They only say 1988+

I've heard discussions about using adapters. However, the tire shop advised against adapters for some reason. Are adapters safe for the car or change the ride?

Thank you!


Amazon.com: 18-inch Fits Chevrolet - Corvette C6 Aftermarket Wheels - Chrome 18x9.5 - Set of 4: Automotive
Hi

You need 1 inch adapters, they bolt on to your car and the wheels bolt on them. The actual difference in offset between the 84-87 is 38mm to 54mm on the 88-96 3/4 inch but the adapters are 1 inch.

I have been using them for close to 15 years now and have not given any problems, i also track my car so that is a good reliability test.

You can get the 88-96 style wheels with offset for 84-87 so you do not need adapters, but they are in 17 inch?

Link to direct fit 17 inch chrome wheels

http://www.parts123.com/corvettecent...50f&ukey=16150

Link to adapters

http://www.parts123.com/corvettecent...50f&ukey=10148

Link to 18 inch C7 wheels "with correct 84-87 offset" no adapter needed.

http://www.parts123.com/corvettecent...50f&ukey=48138

Old 03-03-2016, 11:04 PM
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John A. Marker
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ADAPTERS are good....spacers no. I ran adapters on my 85 for years using the car on the 1/4 mile drag trace and autocross without issues.

With spacers you will often have to use LONGER studs. The longer studs may lead to failure.
Old 03-04-2016, 12:59 AM
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J.C4-1985
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Thank you for the responses!

I found a 2005 replica wheel that list the correct offset for 1984-1987. It is the only one that I can find.

http://customwheelsmarket.com/18ch20corewh3.html

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