C&M Racing

I need a set of 18x10 front and 18x11 rears for use on a T1 racecar. I am using C6Z06 brakes front and rear and need to have wheels that fit over the brakes.

rasrboy

If you are looking at it budget wise, why not just run 4 18X10.5's at all 4 corners?

Thats what I would run on my T1 car when not doing SCCA events.

C&M Racing

Rules state 10 front and 11 rears

trackboss

I have a set of CCW C10's in that size. Shotpeened and anodized. Excellent condition. Actually, I only need to sell the rears as I am installing wider rear fenders so I need wider wheels/tires in the back. The other option is to sell the fronts, move my current rears forward, and purchase the 13" rears new so I can use the set for track only. I'm willing to sell the set, but I don't want to lose my *** on them because I would have to buy a new set of the same wheels again. Below is a picture of my track set of the same wheels I used to have, but 11"/12" widths. They look the same, but the lip on the rears in the photo is only on the 12" or wider wheels.

The Six

Not sure what your time frame is, but I'm planning to sell my Forgeline EV1R wheels. 18X10 front and 18X11 rear. Will clear your brakes as well. PM me if you are interested.

C&M Racing

I like the wheels and time is not an issue but I don't think I can afford those wheels.

The Six

PM Sent

fatbillybob

Check rules again. Isn't the C6z06 a 6 piston front caliper? If you you are already illegal.

gkmccready

http://cms.scca.com/documents/Club%20Forms/GCR-Dec.pdf

They're specifically allowed on C6s. C5s may also run a Wilwood SL6R 6-piston caliper. C5 line also says "C6 calipers allowed" but I think that refers to the stock slide-rails.

fatbillybob

Yes but OP said running 18x10 and 18x11 which means he is running a
C5 T1 car and the Z06 caliper is not allowed. See GCR 647. Also the SL6R is better than oem but not by much it is said but cheaper than any of the real race systems like the AP's or the Stoptechs or even a BremboGT which is more of a light track/street set-up.

gkmccready

Apologies to the OP for the side-track, but "max wheel size" doesn't mean prescribed wheel size. So far as I know the C6 cars are running 18x10+18x11s. And you've obviously never used the SL6Rs if you're saying they're not much better than the stock slide-rails... they're significantly better for pad wear and heat tolerance and they don't spread like the slide-rails. I agree GCR 647 leaves it open to interpretation what "C6 brake calipers allowed" really means now that all C6s are permitted Grand Sport (aka Z06) brakes.

Good luck with finding your wheels, OP!

C&M Racing

Sorry that I forgot to post year. It is a C6 and I was running 4 pot aftermarket but I would like to do away with the +50lb for the calipers. My current CCW classics require way too much spacer to clear both C6Zo6/GS or aftermarket calipers. The way I read the rules SL6R are not legal for C6 T1 cars. I have Z06, SL6R and 4 pot Wilwood calipers at the shop and I am going to try the Z06 calipers and if pad life is OK I will stay with them but I can always go back to the 4 pot Wilwoods. Same wheel is needed for either of the calipers. I Think

fatbillybob

I thought c6 was running 19" rear. Ap during development of their t1 brake blew up sl6 on dyno.
I never ran sl6. I was development car for stoptechs 4 caliper 4 piston t1 brakes.

redtopz

I have the wilwood sl6 calipers and have been running them for a couple years now with no problems. I like the 20 mm pads they run. I just finished converting my C5Z to T1 and bought some used 17x10 and 17x11 ccw classics from another forum member. However, they don't fit over my sl6 calipers. Did I buy the wrong wheels or do people just use spacers to make them fit?

C&M Racing

I tried the 10 x 18 classics with the SL6R and they fit without spacer. I think the "R" calipers are a bit narrower.

SouthernSon

My OEM '03 wheels fit fine over the SL6's. However, the Motorsport aftermarket C5Z06 imitation wheels require a spacer. They are thicker cast. The CCW 17's that I used to have also required a spacer.

redtopz

That's what I heard. I have the full width calipers.

Yeah, my stock 17" wheels fit over my SL6's so I figured the 17" ccw's would fit also (wrong). Looks like I'll need a pretty large spacer to make these work. Thanks for the info.

fatbillybob

There are 2 calipers that are called sl6 and regular and a narrow. I think it was the narrow that was t1 legal to fit under the ccw's all without the 50lb weight penalty. Once you go to 4 pistons you get 50lbs and you gotta go with 18" wheels on the C5. The narrow uses the 7416 pad and the regualr uses the 7420 pad which is the same pad the AP Hardbar T1 kit uses. Anyone want more info on why the SL6 is not a great caliper for racing leave me out of it. All us T1 guys had a long discussion with Gary at Hardbar and he pretty much convinced us with some math too as to why the AP was the way to go. He can tell you the whys and hows. Still I went with Stoptechs because I got the development offer and I am happy. Everyone else serious about stopping their car went with the AP Hardbar units which is a great product with a much different engineering solution than Stoptech. Check with emillio at 949 racing. I think he built 17" wheels for Oli that fit the AP Hardbars with a different offset. CCW had no interest in making a new classic wheel but I forget which wheel does fit for the application and kinda looks like the classics so we could run a 18" ccw front and 17" classic in rear.

gkmccready

The SL6R is the full width (7420 pads). The SL6 is the narrow (7416 pads). There's also a Wide-5 version of the caliper with a narrowed outboard body that uses the 7420 pads. Gary must have really changed his tune on the SL6Rs because he's the one that sold me mine!

The CCW LM20 (Lip Monster) supposedly clears big brakes; anybody check with John & Chip? Their Corsair wheels should all clear easily. My 18x10+18x11 on my C6 have tonnes of room.

fatbillybob

There is nothing wrong with the SL6. Technology changes. The AP was not available until late 2010. The T1 C5 vette has been developed over many years now and getting faster every year as more is allowed to be added to the cars. When we were allowed headers and any exhaust which add more horsepower to already marginal brakes where rotors need to be changed on the 2nd trackday and sticky A6 hoo hoos, it was obvious that we needed a new brake solution. The AP hardbar T1 kit was garys answer eventhough he already had the SL6 option. He basically knew we were going to destroy the SL6. I really have no dog in this hunt. I already have brakes that no one can even buy yet. Talk to Gary he is an engineer.