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Issue with C6 wheels fitting

Old Nov 24, 2009 | 05:58 PM
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Default Issue with C6 wheels fitting

Having a tough time to get my new C6 wheels and tires to fit on the SS.

Stock ride height. 2002 Camaro SS.

We got the wheels mounted and balanced tonight and went to put them on while the car was on the lift and....

FRONT:
18" x 9.5" fronts mounted on GSD3 F1's 275/40/18.
The fronts rub really hard when turned -- I didn't think I'd have any kind of issue with these but I guess I was wrong.


REAR:
18" x 10.5" rears mounted on Nitto 555R's 305/35/18.
The rears are rubbing on the bump stops pretty hard. Added a .25" spacer and it wasn't even close to being enough to help it fit.

Any tips on helping to get this combo to work. I can't go out any further with the spacer because I still have the stock studs.

For what it's worth, I slapped the 18" x 9.5" fronts on the rear and there's only a minimal amount of clearance from the bump stops. The good news is that it doesn't look like any BFH is needed, however I don't know how to remedy the bump stop and front rubbing issues.
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Old Nov 24, 2009 | 06:05 PM
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you really need the 1.25 spacer adapter i will post a link for them..
http://cgi.ebay.com/ebaymotors/WHEEL...Q5fAccessories

i have purchased a few sets from this seller,on time with shipping...they are on my car in sig pic
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Old Nov 24, 2009 | 09:06 PM
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Thanks for the reply -- that's certainly an idea. Sounds much easier than new studs + custom spacers, grind the bump stops, etc.

How reliable are the adapters for a moderate HP setup (600+ rwhp on spray with a decent tire)? I'm thinking a 1" adapter in the rear and a 3/4" in the front would do the trick. Any thoughts?
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Old Nov 24, 2009 | 09:30 PM
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what is the offset of your wheels?

thanks
tony
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Old Nov 24, 2009 | 10:23 PM
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Originally Posted by vatechguy3
what is the offset of your wheels?

thanks
tony
From the sizing these aren't OEM C6's off a vette, so ^ ...need to know your offsets.
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Old Nov 25, 2009 | 01:32 AM
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Originally Posted by Midnight02
Thanks for the reply -- that's certainly an idea. Sounds much easier than new studs + custom spacers, grind the bump stops, etc.

How reliable are the adapters for a moderate HP setup (600+ rwhp on spray with a decent tire)? I'm thinking a 1" adapter in the rear and a 3/4" in the front would do the trick. Any thoughts?
i think they are pretty reliable. 600 rwhp on an 18"Dr will most likely spin before the studs break off.......i do suggest when its time to lay the smack down a pr of 15x10s w/tires that has sidewall and remove the spacer/adapters
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Old Nov 25, 2009 | 10:01 AM
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Hey guys,

Thanks for your help with this.

As requested, here are the offsets:

Front - 18" x 9.5" -- Offset is 56mm

Rear - 18" x 10.5" -- Offset is 58mm

These are the OE Wheels C6 replicas, not the OEM C6 wheels.

Does this info help?
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Old Nov 25, 2009 | 10:15 AM
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Your front tire size aspect ratio (tire height from rim to ground or diameter) is too high, it should be a 35 series not 40. You probably should have gotten something like a 255 or 265-35-18 for the fronts. The rears you'll probably need a wider spacer and probably went with 295-30-18 series tires for the rears.
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Old Nov 25, 2009 | 10:53 AM
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Originally Posted by Midnight02
Hey guys,

Thanks for your help with this.

As requested, here are the offsets:

Front - 18" x 9.5" -- Offset is 56mm

Rear - 18" x 10.5" -- Offset is 58mm

These are the OE Wheels C6 replicas, not the OEM C6 wheels.

Does this info help?
Weird...I ran C5Z replicas at 18x9.5 and 58mm offset up front (which is higher than yours) and I had over an inch of clearance on the inside...both lowered 1.5" and at stock height.

I DID have 275/35/18's though.
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Old Nov 26, 2009 | 04:59 PM
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Originally Posted by Blakbird24
Weird...I ran C5Z replicas at 18x9.5 and 58mm offset up front (which is higher than yours) and I had over an inch of clearance on the inside...both lowered 1.5" and at stock height.
.
That's what I was thinking -- didn't anticipate I'd ever have any trouble with a 275/40/18 on the front with a 18" x 9.5" wheel.

Is there anything I can do that would help it fit or do I have a pair of front tires that are no good to me? The shame is that they're the Goodyear F1's that are on sale on Tire Rack and they look awesome!
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Old Nov 26, 2009 | 08:59 PM
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Originally Posted by gm02ceta
Your front tire size aspect ratio (tire height from rim to ground or diameter) is too high, it should be a 35 series not 40. You probably should have gotten something like a 255 or 265-35-18 for the fronts. The rears you'll probably need a wider spacer and probably went with 295-30-18 series tires for the rears.
Thanks for the info there -- I figured I would be fine with the 275/40's (I was wrong). Is there any alternative to just buying new tires?
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Old Nov 26, 2009 | 10:54 PM
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For the rear you can get a set of 20mm hubspacers, and roll the fender lips, and if you don't have a adjustable PHB,get one you'll need it. For the front you have one option, new tires.

Another option for the rear: ARP wheel studs, *BFH mod, *trim/clearance the bumpstop/mounts, reinstall 1/4" spacers.

*repeat if necessary.
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Old Nov 27, 2009 | 10:47 AM
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Thanks for the help -- I was afraid that was the answer! UGGGH!
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Old Nov 27, 2009 | 12:02 PM
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I just got the spacers for my set of OE wheels (18s front 19s rear). They work awesome. If you got the oe wheels, there are even recesses on the back of the wheel so you dont have cut off whats left of the studs that protrude past the spacers.
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Old Nov 27, 2009 | 12:03 PM
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just dont forget to torque them to spec. use a torque wrench.
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Old Nov 28, 2009 | 04:40 PM
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are you sure that your OE C6 wheels are not 18x8.5??? No where on the website have I seen the C6 in a 18x9.5....



EDIT: Let me take that back. Yes OE has 18x9.5" wheels on their website.. But can you get (2) 18x9.5s and (2) 18x10.5 in a package deal? B/C they only offer the 18x8.5 and 18x10.5 in their package deal. Would rather have a 9.5" wide wheel

Last edited by TORCHD 02 TA; Nov 28, 2009 at 05:12 PM.
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Old Nov 28, 2009 | 05:52 PM
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Originally Posted by TORCHD 02 TA
are you sure that your OE C6 wheels are not 18x8.5??? No where on the website have I seen the C6 in a 18x9.5....



EDIT: Let me take that back. Yes OE has 18x9.5" wheels on their website.. But can you get (2) 18x9.5s and (2) 18x10.5 in a package deal? B/C they only offer the 18x8.5 and 18x10.5 in their package deal. Would rather have a 9.5" wide wheel
Yeah -- give them a call and they'll do a 9.5" + 10.5" package -- that's what I've got. The ebay price on the chrome C6 combo is $599 -- tough to find it on e-bay at times, however as long as there's an auction out there with the combo at that price they should honor the price for you.
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Old Nov 28, 2009 | 06:09 PM
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Originally Posted by Midnight02
Yeah -- give them a call and they'll do a 9.5" + 10.5" package -- that's what I've got. The ebay price on the chrome C6 combo is $599 -- tough to find it on e-bay at times, however as long as there's an auction out there with the combo at that price they should honor the price for you.
Sweet I am going to have to call and order that package deal then! The 9.5" wheel would look much better than the 8.5" wheel

BTW did you ever figure what spacers you are goign with?

I did some research. People running the C6 wheels used 1.25" spacers for the rear. And some people left the fronts alone, or threw on a 1" spacer..

Originally Posted by BandDirector Blk98ZM6
1.25" adapters/spacers on the rear...actually if you've got a TA, you can even use 1.5" if you'd like a little wider stance. They will fit perfectly once you get the spacers. I paid $67 shipped for mine of of eBay. Look for 5x4.75 spacers/adapters. Fenders won't need rolling after that.

However, if you're running the stock C6 tires, then there's a good possibility it will set off your ABS light. It doesn't like tires that are more than 1" larger in overall height.

Here's a pic of what you're looking for:

Originally Posted by BandDirector Blk98ZM6
Doesn't that make the front tires have a wider stance than the rears?!

The front 18x8.5's were pretty flush with the front fenders without spacers...the rears then sit flush with the rear fenders with 1.25" spacers.

Here's how my rears looked with a 1.25" spacer:

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Old Nov 28, 2009 | 08:17 PM
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Originally Posted by TORCHD 02 TA
I did some research. People running the C6 wheels used 1.25" spacers for the rear. And some people left the fronts alone, or threw on a 1" spacer..
Keep in mind that this is for OEM C6 vette wheels with the rears having a 79mm offset and that the "spacer" being used is an adapter.
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Old Nov 28, 2009 | 09:14 PM
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Thanks for the pics -- that's certainly helpful.

I have the replica C6 wheels, so the rear has a 56mm offset. Would a 1.25" adapter like BandDirector Blk98ZM6 used above have the wheel protruding way past the fenders? Hopefully it would be close to flush.
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