17x10 forment sanity check
Thread Starter
Instructor
Joined: Apr 2015
Posts: 173
Likes: 1
From: Clermont-Ferrand France
17x10 forment sanity check
I have the opportunity to get a set of nice looking rims (beauty is in the eyes of the beholder), for my 76.
I do not have much info.
The owner says they were on a 91 C4, and they are currently fitted with 315/35/R17.
And if I understood correctly, the backspacing is 7.5in (although, that sounds like quite a lot).
Obviously, I would have to relocate the parking brake bracket, get an adapter and go down a size or 2 tire wise. And I would also go and have a closer look before striking a deal.
Stock C4 onto C3 seem doable. But these are wider.
What do you think?
Is it reasonable to hope to get them fitted on my 76?
Thanks,
Ced
I do not have much info.
The owner says they were on a 91 C4, and they are currently fitted with 315/35/R17.
And if I understood correctly, the backspacing is 7.5in (although, that sounds like quite a lot).
Obviously, I would have to relocate the parking brake bracket, get an adapter and go down a size or 2 tire wise. And I would also go and have a closer look before striking a deal.
Stock C4 onto C3 seem doable. But these are wider.
What do you think?
Is it reasonable to hope to get them fitted on my 76?
Thanks,
Ced
Thread Starter
Instructor
Joined: Apr 2015
Posts: 173
Likes: 1
From: Clermont-Ferrand France
I saw that c4 c5 wheels would require a 4-5 in adapter.
I suspect that anything bigger would need even more and push the wheel outside of the fender ( no flare).
So this is probably a no go then.
Am I correct?
I suspect that anything bigger would need even more and push the wheel outside of the fender ( no flare).
So this is probably a no go then.
Am I correct?
Had a 1976 L-82, 4-sp
Joined: Mar 2011
Posts: 5,338
Likes: 1,213
From: Some days your the dog and some days your the hydrant.
Royal Canadian Navy
The stock wheel has a 4" bs. Do the math. 7.5"-4"=3.5" A 3.5" wheel adapter will work. With a 17" wheel and stock suspension, you can probably tuck the wheel inward another 0.5" and use a 3" adapter. I have 18"x9.5" wheels with 5.25" bs. I relocated the parking brake bracket and the wheel fits without any spacers/adapters and is flush with the fender arch.
Last edited by resdoggie; Aug 9, 2017 at 07:14 AM.
Melting Slicks
Joined: Mar 2008
Posts: 2,666
Likes: 289
From: Spring Park MN
With a 10" wide wheel you will want between a 5" and 5.5" backspace.
Tire sizes to fit a 10" wide 17 are a little scarce. You could run a 285/40/17. It is 26" tall, 1" shorter than the stock tires which were 27".
The 315/35/17 tires are shorter yet and too wide to fit well.
Mike
Tire sizes to fit a 10" wide 17 are a little scarce. You could run a 285/40/17. It is 26" tall, 1" shorter than the stock tires which were 27".
The 315/35/17 tires are shorter yet and too wide to fit well.
Mike
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I ran 285 and then 315/17. For years without flares
I had 6.5 BS wheels with 2 inch adapters. In your case 7.5 BS all you need is 2.5 or 3 inch adapters
Don't worry about all the uneducated who think that adapters are weak
I had 6.5 BS wheels with 2 inch adapters. In your case 7.5 BS all you need is 2.5 or 3 inch adapters
Don't worry about all the uneducated who think that adapters are weak
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Thread Starter
Instructor
Joined: Apr 2015
Posts: 173
Likes: 1
From: Clermont-Ferrand France
Thanks all for the input.
I checked my math, and with only the backspacing and rim width number, here is what I got:
10in width, 7.5in b/s translates into 2.5in pos offset.
Standard C3 wheel have 4in back spacing, so I would need an adapter to compensate for the difference: 7.5-4=3.5in + 2.5in = 6in.
Now, if I did that wrong, please let me know.
I also removed one of the rear wheel and with a straight edge and some string mocked up a 17x10in wheel with a 5-6in back spacing.
Conclusion, that would be a very very tight fit. The front would most likely be even worst.
So I will pass on the rims and weight for a set of staggered C5 to pop around locally.
Or stick with my 15in turbine, I quite like them anyway.
thanks again to everybody for their input.
I checked my math, and with only the backspacing and rim width number, here is what I got:
10in width, 7.5in b/s translates into 2.5in pos offset.
Standard C3 wheel have 4in back spacing, so I would need an adapter to compensate for the difference: 7.5-4=3.5in + 2.5in = 6in.
Now, if I did that wrong, please let me know.
I also removed one of the rear wheel and with a straight edge and some string mocked up a 17x10in wheel with a 5-6in back spacing.
Conclusion, that would be a very very tight fit. The front would most likely be even worst.
So I will pass on the rims and weight for a set of staggered C5 to pop around locally.
Or stick with my 15in turbine, I quite like them anyway.
thanks again to everybody for their input.
Drifting
Joined: Jun 2012
Posts: 1,990
Likes: 183
From: Port St. Lucie Fl
I have to disagree with that as a blanket statement. I would say spend the money to get get quality spacers and you should be fine, cheap spacers are asking for trouble.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Does anyone make cheap two inch and larger forged aluminum adapters with quality steel studs
I think that they build them tough so that they never get sued over a failure
I think that they build them tough so that they never get sued over a failure
Le Mans Master
Joined: Mar 2001
Posts: 5,741
Likes: 646
From: Lincoln, CA
http://www.motorsport-tech.com/wheel_adapters.html
Doesn't state forged but U.S. Alcoa 6061t6 billet aluminum
Doesn't state forged but U.S. Alcoa 6061t6 billet aluminum
Drifting
Joined: Jun 2012
Posts: 1,990
Likes: 183
From: Port St. Lucie Fl
Safety Car
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
if you choose to use adapters use only concentric adapters.
All corvette wheels are designed hub concentric.
I have 1 brand new set of 2" concentric adapters, never mounted qty. of 2
shipped in USA for $50 contact me if interested.
All corvette wheels are designed hub concentric.
I have 1 brand new set of 2" concentric adapters, never mounted qty. of 2
shipped in USA for $50 contact me if interested.
Last edited by 69Vett; Aug 11, 2017 at 11:29 PM.
