LEAVINU

Wondering what wheels and size/offset/tire widths you guys are running with the non-Z06 fenders? Interested to know if you are running the stock cooling ducts or an aftermarket setup too?

If you can provide as well the weights on the wheels you run that would be great.

timsam

2006 C6 Coupe

Rims: C5-Z06 "lightweight" 18 inchers in front and back (sorry, dont know the weights)
Tires: R888 275-front 305-rear
Brake Ducts: LG's duct and spindle kit

Picture: http://www.hart-photography.com/phot...wImage=1077846

LEAVINU

Any issues with fender rubbing? Are you at stock ride height or lowered at all?

timsam

I havent experienced any rubbing issues. I am at stock ride height, but I am planning to lower it to a "track stance" in the near future.

LEAVINU

Thanks for the feedback Tim. I am lowered as much as possible on stock bolts and have a Wilwood kit all around. These seem to be my biggest challenges with the c5z wheel fitting. Really wish I could run the setup u have. Seems like the best way to go.

ErnieN85

Stock C5 Z06 will fit over the Wilwoods ( from LG) with the base brake rotors. after market probaly wount with out a 1/4" spacer

LEAVINU

so my only concern now is tearing up the fenders with wide tires up front and out back. Anyone have insight or a pic of this view?

bobmoore2

2006 Z51

Front Wheels - CCW C10s or C14s in 18 x 10 with 58mm offset
Front tires - 305/30-18 Kumho V710

Rear wheels - CCW C10s or C14s in 18 x 11 or 18 x 12, both with 79mm offset
Rear Tires - 315/35-18 Kumho V710

Brake Ducts - Quantum Motorsports spindle ducts and DRM ducts

No rubbing issues. The tires rub a little against the DRM ducts near full steering lock, but you never turn that tightly on the track, so it's not an issue. No rubbing against the fender wells at all.

I do not know the weight of the wheels, but they are somewhere in the mid-20s lbs range. Very strong wheels and they look pretty good too.

ktoonsez

I have a Z06 rear only conversion on my '08 vert and run a 18x9.5 front rim with 275 R888. There is no rubbing at all if you are stock. I have added the Quantum Motorsports Racing brake cooling kit and did have some minor rubbing on the Z06 inlet at full lock. I put it a 5/16th spacer to stay away from the inlet and the tires are pretty much to the outside of the fender now. I have not hit the fender at all so far, the car is extremely low (can barely get your fingers in straight under the fender while on top of the tire, if that gives you any idea how low it is to stock) as I have Pfadt coilovers and so far so good. Feel free to PM me if you have any questions.

gkmccready

I currently have 18x10+18x11 CCW C140s with 275/35r18+305/35r18 Toyo R888s. Stock eccentrics for alignment -- when I had the camber plates it pushed the track so wide I needed a bunch of spacers to "only" get -1.75deg camber up front and that pushed the wheel out far enough to rub the tire on the fender. Still with -1.75deg in the front and no spacers behind the Pfadt dogbones (came with the poly bushings) I now don't rub the fender, but slightly rub the wheelhouse at lock. C6 Z06 brake ducts right now, and they would hit the DRM brake ducts, too... at lock, of course. (Had them on previously.)

I originally started with 18x11 295/30r18 fronts with the camber plates and with what I mentioned about they were rubbing the fender and also hitting the tie-rod approaching lock. I never tried these without the camber plates, so I can't say for certain if they'd suck in enough not to rub the fender with the stock eccentrics, but I'm sure pulling them in would have them rubbing the wheelhouse and either C6Z or DRM brake ducts at lock.

C6 non-Z06 front fenders just don't give all that much room for big wheels & tires, IMO. I can't understand how the guys running 315 Hoosiers on C5Z 18x10.5 wheels have everything clear...

Here's a loaded shot with 18x10+18x11 275+305: http://gotbluemilk.com/web100709/4/i...s/image48.html

Here's a loaded shot with 18x11+18x11 295+305:
http://www.petting-zoo.net/corvette/...s/image18.html

Approximately the outside 3/8" of the 295s was scrubbed shiny and smooth from rubbing.

I run approximately 4.5" from ground to just in front of the front jacking puck hole. I ran the 18x11s with the stock springs, I'm running the 18x10s on DRM coilovers.

sergeyk

What offsets on your 18x10 fronts, 18x11 fronts and 18x11 rear?

gkmccready

I just did exactly what John & Chip @ CCW said. 18x10 is 7.75" backspacing. 18x10.5 would be 8". 18x11 was 8.25". Stock was 18x8.5 and 6.53" backspacing. The rears just fit perfect so I've never measured them up... stock was 19x10 with 8.11" backspacing. On a C6 non-Z I bet you could fit 18x11.5 in the rear, I don't think another 1/4" either way would hurt. Looking at the pictures and clearances I'd think 18x12 with more rubber might be questionable for clearance.

That said, I know John@CCW has put people on C6Z sized rubber on the C6 and they've not had issues. If there's a weird problem or clearance issue it always seems to happen to me. :-)

sergeyk

Hmm, I used 2 different offset<-->backspace calculators:
http://www.mickeythompsontires.com/t...p?bulletin=s10
http://www.ccwheel.com/incs/technica...rter/index.php

And both gave different number for the stock from your data: front 18x8.5 with offset 56mm --> 6.95" backspacing.
Rear 19x10 with 79mm offset --> 8.61" offset.
I really would like to know the correct offset/backspace for 18x10/18x11 or 18x11/18x11 setup as I am looking for one for my C6 Z51.

Rob Willis

18" CCWs all around, fit perfect.

Fronts rub the plastic Z06 brake duct a tad.

...and they are for sale.... $3200 w/ R888s on them.

sergeyk

e-mail me offsets and pics to zxsk at hotmail.com.... thank you...

gkmccready

Call CCW and ask? They know what to build to have it fit... I'm sure the other vendors do as well. The C6 isn't an uncommon car for aftermarket wheels.