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C5 wheels on a C3

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Old Jul 23, 2007 | 12:09 PM
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Default C5 wheels on a C3

Can anyone tell me what spacer I need if I wanted to mount 17 x8.5 or 17 x 9.5 C5 wheels on my C3??

Thanks very much..Tony
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Old Jul 23, 2007 | 12:41 PM
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First a little clarification. What you're looking for is an adapter. A spacer will just act as a shim between the flange and the wheel. An adapter actually bolts to the hub like a wheel and the wheel in turn bolts to the adapter. Make sure you have custom adapters made to be hub centric if you cannot find them for sale that way. The key to being hub centric is the adapters rest on the hub flange and not the lug studs.

If I remember right you're looking for 2.5" adapters all the way around, although 2.75" will give you a little breathing room and it won't be quite as tight.
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Old Jul 23, 2007 | 01:19 PM
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Originally Posted by tabbruzz
Can anyone tell me what spacer I need if I wanted to mount 17 x8.5 or 17 x 9.5 C5 wheels on my C3??

Thanks very much..Tony
Actually most C-5's have 18" X 9.5 in the rear.
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Old Jul 23, 2007 | 06:35 PM
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Originally Posted by Budman78
Actually most C-5's have 18" X 9.5 in the rear.
He is only asking about fronts to use drag radials on.
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Old Jul 23, 2007 | 07:51 PM
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I used 2.5" adapters with C5 front wagon wheels.
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Old Jul 23, 2007 | 09:02 PM
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sorry for thread jack but are adaptors bad for your car and dont they look weird?
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Old Jul 23, 2007 | 10:08 PM
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Yea they do look a little out of place have had no trouble with them even with the 496 roasting them like it is nothing





adapters are to adapt one size stud pattern to another of different size, spacers are to set the wheels out further when the wheel and hub have the same pattern.

Neal
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Old Jul 24, 2007 | 11:36 AM
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Originally Posted by chevymans 77
Yea they do look a little out of place have had no trouble with them even with the 496 roasting them like it is nothing





adapters are to adapt one size stud pattern to another of different size, spacers are to set the wheels out further when the wheel and hub have the same pattern.

Neal
That looks awesome!!!!
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Old Jul 24, 2007 | 12:31 PM
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Thanks guys....I will look for 2.5" adapters.....
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Old Jul 25, 2007 | 08:06 AM
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Here is pic of a 2.5" adapter as installed on my rear rotor. Note the lip protruding from the center of the adapter. You want to have this. Make sure that the adapter you purchase has this lip. I had to have the front adapters machined to clear the front hubs properly. I know of another forum member who used these sames adapters and was able to file them to fit the front hubs.


Last edited by Frankenvette; Jul 25, 2007 at 08:09 AM.
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Old Jul 25, 2007 | 12:04 PM
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Cool....Can you tell me where you got these from? I really only need the rears as I would like to use my c5 wheels\Drag radials on my c3...Great pic....It helps alot....
Thanks very much
Tony
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Old Jul 25, 2007 | 12:26 PM
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TNX for great info.

tt
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Old Jul 25, 2007 | 06:55 PM
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Originally Posted by tabbruzz
Cool....Can you tell me where you got these from? I really only need the rears as I would like to use my c5 wheels\Drag radials on my c3...Great pic....It helps alot....
Thanks very much
Tony
I purchased these off ebay from a seller named "completevalue". Another forum member also purchased from this person. VB&P also sells adapters, however, there is some confusion about their adapters. If you look at the pic in their catalog the adapters do not appear to be hub and wheel centric. In other words, they do not have the recess on the backside and the lip refered to in my pic on the front side. Without these the wheel will rest on the studs only... not good. You may want to contact VB&P first and see if their adapters are in fact hub and wheel centric. Like I said their catalog picture does not show their adapters to be hub/wheel centric. See for yourself...


Last edited by Frankenvette; Jul 25, 2007 at 06:58 PM.
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Old Jul 25, 2007 | 07:25 PM
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Originally Posted by chevymans 77
Yea they do look a little out of place have had no trouble with them even with the 496 roasting them like it is nothing





adapters are to adapt one size stud pattern to another of different size, spacers are to set the wheels out further when the wheel and hub have the same pattern.

Neal
My first thought of C5's on a C3 was not to pleasent, but man was I wrong. I had a different wheel in mind.Looks sweet!!!!
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Old Jul 25, 2007 | 08:41 PM
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Frankenvette and Chevymans77 I got a question for you guys!!

By going with these wheel adapters and the C5 & C6 rim does it throw off your steering geometery??
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Old Jul 25, 2007 | 10:39 PM
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Originally Posted by Hybrid117
sorry for thread jack but are adaptors bad for your car and dont they look weird?
no -- SPACERS are bad for your car, and adapters look just fine.

Call Vette Brakes and they can tell ya what you need.
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Old Jul 25, 2007 | 11:02 PM
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Originally Posted by FRSTR90
Frankenvette and Chevymans77 I got a question for you guys!!

By going with these wheel adapters and the C5 & C6 rim does it throw off your steering geometery??
I can't provide an accurate answer to your question. My front suspension/steering is in need of a rebuild, so the steering geometry was already off. I did not notice any changes to the steering switching to the C5 wheels but it is hard to say for sure.
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Old Jul 25, 2007 | 11:39 PM
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Originally Posted by Frankenvette
I can't provide an accurate answer to your question. My front suspension/steering is in need of a rebuild, so the steering geometry was already off. I did not notice any changes to the steering switching to the C5 wheels but it is hard to say for sure.
If you didn't notice any changes, then hopefully it doesn't affect it..
Thanks
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Old Jul 26, 2007 | 11:19 AM
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Thank you....You've been a huge help......Tony

Originally Posted by Frankenvette
I purchased these off ebay from a seller named "completevalue". Another forum member also purchased from this person. VB&P also sells adapters, however, there is some confusion about their adapters. If you look at the pic in their catalog the adapters do not appear to be hub and wheel centric. In other words, they do not have the recess on the backside and the lip refered to in my pic on the front side. Without these the wheel will rest on the studs only... not good. You may want to contact VB&P first and see if their adapters are in fact hub and wheel centric. Like I said their catalog picture does not show their adapters to be hub/wheel centric. See for yourself...

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Old Jul 26, 2007 | 11:49 AM
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2 -1/2 inch T36 aluminum hub centric adapters on all 4 wheels:







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