wheels and offset question
Thread Starter
Drifting
Joined: Jan 2011
Posts: 1,853
Likes: 81
From: Hamilton Virginia
wheels and offset question
Looking at a set of 17 x 9 wheels with a 24mm offset for my 94 vette, and was wondering how they would fit ? Would they stick out past the fender, would they be flush, or would they be in a little ?
The guy had them on his 86 vette, he cannot remember how they sat.
Anyone ?
The guy had them on his 86 vette, he cannot remember how they sat.
Anyone ?
Safety Car
Joined: Aug 2013
Posts: 4,427
Likes: 604
From: Minneapolis Mn
Seeing IIRC the backspace on a 94 is 56 mm, I suspect they'd move the tires out 32 mm if you have the same width rims currently. If you have 9.5" rims then I'd expect to subtract 1/4" from that difference.
86 have factory 32 or 38 mm backspace depending on whether you have the 8.5" or 9.5" rims on it. You'd have a difference of 8 or 14 mm on an early one vs around 30 mm on yours, big difference.
To run 56's on a early C4 that came with 38's, you need spacers so if you're going the other way it would move them out that much.
If you're dead serious on them, take a straight edge across the wheel opening, measure to the lip of the rims then try those and see what the difference it. Personally I think you're going to need some fender flares to cover them up assuming they work including with steering but that's just a guess on my part.
86 have factory 32 or 38 mm backspace depending on whether you have the 8.5" or 9.5" rims on it. You'd have a difference of 8 or 14 mm on an early one vs around 30 mm on yours, big difference.
To run 56's on a early C4 that came with 38's, you need spacers so if you're going the other way it would move them out that much.
If you're dead serious on them, take a straight edge across the wheel opening, measure to the lip of the rims then try those and see what the difference it. Personally I think you're going to need some fender flares to cover them up assuming they work including with steering but that's just a guess on my part.
Last edited by hcbph; Dec 28, 2016 at 12:07 PM.
Thread Starter
Drifting
Joined: Jan 2011
Posts: 1,853
Likes: 81
From: Hamilton Virginia
That's what I was coming up with. I am looking that they would stick outwards of about 3/4"-1" more than a stock 94 wheel. That would most likely put them past the fender lip, which I do not want.
Team Owner
Joined: Sep 2003
Posts: 25,385
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If those values (9 @ 24) are correct the front vs an 8.5 @ 56 (stock), the rim edge sticks out 1.5" further than where the rim edge is presently. On the rear vs a 9.5 @ 56 (stock), the rim edge sticks out 1"+ very little further than stock.
If the information isn't cast on the back-side of the wheel and there's no tire mounted the edge to edge dimension -1" would be the advertised wheel dimension, 9" wheel would have a total wheel width of 10"+/- very little. If the wheel is actually a 9" and the @ 24 is correct you should have a back-spacing (mounting flange to inner rim edge) dimension of just under 6".
If the information isn't cast on the back-side of the wheel and there's no tire mounted the edge to edge dimension -1" would be the advertised wheel dimension, 9" wheel would have a total wheel width of 10"+/- very little. If the wheel is actually a 9" and the @ 24 is correct you should have a back-spacing (mounting flange to inner rim edge) dimension of just under 6".
Le Mans Master
Joined: Aug 2015
Posts: 6,091
Likes: 1,972
From: St. Charles MO
Looking at a set of 17 x 9 wheels with a 24mm offset for my 94 vette, and was wondering how they would fit ? Would they stick out past the fender, would they be flush, or would they be in a little ?
The guy had them on his 86 vette, he cannot remember how they sat.
Anyone ?
The guy had them on his 86 vette, he cannot remember how they sat.
Anyone ?
Last edited by MatthewMiller; Dec 28, 2016 at 06:10 PM.
Thread Starter
Drifting
Joined: Jan 2011
Posts: 1,853
Likes: 81
From: Hamilton Virginia
Well today my plan was to remove a front and rear tire, add some 1/2" spacers and put the stock tire back on and see what it looks like.
I do not mind if the tires are just breaking the edge, but anymore than that just doesn't look right to me.
No matter how good of a deal I could be getting here, if it doesn't look right to me it will never feel like a deal.
I do not mind if the tires are just breaking the edge, but anymore than that just doesn't look right to me.
No matter how good of a deal I could be getting here, if it doesn't look right to me it will never feel like a deal.
Safety Car
Joined: Aug 2013
Posts: 4,427
Likes: 604
From: Minneapolis Mn
Just a reminder, if the tire extends outside of the wheel opening and you have suspension bounce you run the risk of the tire impacting the wheel wells. That includes both the front and rear as possible contact areas. May fit when the car is static but remember that static is not the desired setting for a Vette. 
Team Owner
Joined: Sep 2003
Posts: 25,385
Likes: 2,737
Well today my plan was to remove a front and rear tire, add some 1/2" spacers and put the stock tire back on and see what it looks like.
I do not mind if the tires are just breaking the edge, but anymore than that just doesn't look right to me.
No matter how good of a deal I could be getting here, if it doesn't look right to me it will never feel like a deal.
I do not mind if the tires are just breaking the edge, but anymore than that just doesn't look right to me.
No matter how good of a deal I could be getting here, if it doesn't look right to me it will never feel like a deal.
I get the "if it doesn't look good" it doesn't matter the "deal" !!!!
Have you checked the wheels for casting information?
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Thread Starter
Drifting
Joined: Jan 2011
Posts: 1,853
Likes: 81
From: Hamilton Virginia
Using a "string and a plumb-bob" hang it from the center of the hood edge lip and the quarter edge lip and measure from what's there now to the string and you can calculate where the new fitment would land. I've done that many times to determine a fitment issue for various cars.
I get the "if it doesn't look good" it doesn't matter the "deal" !!!!
Have you checked the wheels for casting information?
I get the "if it doesn't look good" it doesn't matter the "deal" !!!!
Have you checked the wheels for casting information?
I however have decided to pass on both accounts, looks and too far out to where the wheel would hit.
Team Owner
Joined: Sep 2003
Posts: 25,385
Likes: 2,737
I do know that once I break the plane of the lip edge, I do run the risk of making contact, I should have also mentioned that on top of the facts of the looks. That would also be a deal breaker.
I however have decided to pass on both accounts, looks and too far out to where the wheel would hit.
I however have decided to pass on both accounts, looks and too far out to where the wheel would hit.
Thread Starter
Drifting
Joined: Jan 2011
Posts: 1,853
Likes: 81
From: Hamilton Virginia
Trying to find a set of wheels That I can paint satin black on a bologna budget is hard, especially when the fidament factor also plays a part. I honestly think the Sawblade wheels were one of the ugliest wheel ever put on the corvette. And they take away soo much of the awesome factor of the c4. ( Please dont be offended those who like them, its just my own assesment. 
).
So back to the search process
).So back to the search process