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I need help with fitment

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Old Mar 5, 2016 | 09:26 AM
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Default I need help with fitment

I'll keep it short as I can but I bought a set of the older 5spoke c5 wheels with the goofy center cap and I need to know what to expect. I have researched and am getting mixed answers! They are the 18x10.5 275-40s wheel and 17x9.5 with 245-45s

I'm sorry for beating a dead horse but everyone I ask in my city and from the links on here and Google all have different response.

I know what your thinking too just pull my wheels off and test fit but I go to school all day and work all night and they are up on the 5th floor of my apartment and I haven't had the money to invest in a HF pump Jack so it would suck to jack it up pull of the lugs and carry one down to figure out they need the 1/8 in spacer or bfh mod or a 1.5 wheel adapter!?

Thank you and let the criticism begin

Last edited by GMsfinest; Mar 6, 2016 at 01:37 AM.
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Old Mar 5, 2016 | 05:31 PM
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Pick up 50' of rope while you're at harbor freight getting your jack and BFG.
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Old Mar 5, 2016 | 07:22 PM
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Originally Posted by GMsfinest
I'll keep it short as I can but I bought a set of the older 5spoke c5 wheels with the goofy center cap and I need to know what to expect. I have researched and am getting mixed answers! They are the 18x10.5 275-40s wheel and 17x9.5 with 245-45s

I'm sorry for beating a dead horse but everyone I ask in my city and from the links on here and Google all have different response.

I know what your thinking too just pull my wheels off and test fit but I go to school all day and work all night and they are up on the 5th floor of my apartment and I haven't had the money to invest in a HF pump Jack so it would suck to jack it up pull of the lugs and carry one down to figure out they need the 1/8 in spacer or the bfg or a 1.5 wheel adapter.

Thank you and let the criticism begin
Can you post pics of the wheels?
OEM C5 5 spokes never came in 10.5in wide, only 9.5in wide. Plus those tires are narrow for the widths of the wheels.
If they are the stock C5 wheels they will fit fine, but be tucking in pretty good.
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Old Mar 6, 2016 | 12:21 AM
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Originally Posted by JD_AMG
Can you post pics of the wheels?
OEM C5 5 spokes never came in 10.5in wide, only 9.5in wide. Plus those tires are narrow for the widths of the wheels.
If they are the stock C5 wheels they will fit fine, but be tucking in pretty good.
Awesome I was wondering that when I looked up stock sizes, but when I put the tape measure through the spoke and measured it looks 10.5 I guess I'm not measuring the right way sorry but thank you you just saved me a **** ton of time and energy (If they wouldn't fit) because I don't have the resources I'd like. Also I agree I'd like wider eventually but I'm all stock with 4:10s so I think going even bigger with tires is overkill till I get my heads ported next months and do some other stuff(ported tb, lid, ram air, removing catback and about 100lbs worth of other ****) ..even then. 😔


Last edited by GMsfinest; Mar 6, 2016 at 12:34 AM.
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Old Mar 6, 2016 | 12:26 AM
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Originally Posted by Captain Slow
Pick up 50' of rope while you're at harbor freight getting your jack and BFG.
Ahhh good idea! 😁
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Old Mar 6, 2016 | 10:33 AM
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For what it's worth, I just put a set of 18x10.5 rear with 285/40 tires, 18x9.5 front with 255/45 tires on my 99 Trans am both wheels had 56mm backspace. Fronts fit fine, rears I had to trim the bump stops so they weren't rubbing.
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Old Mar 6, 2016 | 10:55 PM
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Originally Posted by 99T/A_No0b
For what it's worth, I just put a set of 18x10.5 rear with 285/40 tires, 18x9.5 front with 255/45 tires on my 99 Trans am both wheels had 56mm backspace. Fronts fit fine, rears I had to trim the bump stops so they weren't rubbing.
Thank you, yeah I like 18/18 on the ta but it looks goofy on Maros.
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Old Mar 7, 2016 | 12:08 PM
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Originally Posted by GMsfinest
Awesome I was wondering that when I looked up stock sizes, but when I put the tape measure through the spoke and measured it looks 10.5 I guess I'm not measuring the right way sorry but thank you you just saved me a **** ton of time and energy (If they wouldn't fit) because I don't have the resources I'd like. Also I agree I'd like wider eventually but I'm all stock with 4:10s so I think going even bigger with tires is overkill till I get my heads ported next months and do some other stuff(ported tb, lid, ram air, removing catback and about 100lbs worth of other ****) ..even then. ��





Those wheels, in the Corvette community, anyway, are known as "wagon wheels". As I recall, the front wheels are 17x9.5 and the rears are 18x10. If you measure the wheels "outside edge to outside edge", then subtract 1", you should have the width of the wheels.

Depending on the ride height of your F-bod, the wheels should work, but you might need an adjustable panhard on the rear of your car, to get the rear axle perfectly centered in the car, and give you the tire clearance you need.
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Old Mar 11, 2016 | 08:20 PM
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They fit! with the 40s in the rear and 45s in the front as well as the shitty rear spings and shocks its sitting slight higher in the front but some lowri g springs will remady it and 35s up front. My bfh did the trick though my wheel well is a little getto looking now even trying to be systematic with it lol 🙄
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