I was looking at the CCW 505A wheels for a very long time,I have the stock Thin Spokes on my 2003 vert now in near mint condition. I’m thinking of putting on the CCW505A in the sizes 19-10 front 20-11 rear. My Vette is lowered about one inch all around now. I would get all new tires as well and just swap out the old for the new. I think I could easily sell the CCW wheels separately when I sell Vette.

 

That's a good plan>>>>>. BUT<<<<<<. while you are still in the consideration phase, consider this. the CCW's and tires is a large investment. I would consider whether or not I would like wide body fenders. If that is never going t be a consideration , your plan seems good. I would question the 20's on the back..... increasing the wheel size diameter only decreases the sidewall choice. without enough buffer ( sidewall ) to absorb the road and its bumps and hazards, you run the risk of damage to the tire, and to the wheel. it also effects the ride... Others who have made this choice will tell you different but, its a simple matter of science.. Everything is a trade off... A diminished sidewall also decreases the ability for the tire to develop kenotic energy ( hook up ) .

This is the reason I went with 19 all the way around. I always do extensive research before committing to a project. 19 X 10 fronts 19X13 rears with 2 inch flairs.

 

Larry, I sent you a pm about a new set of 18x10 and 19x11.5 SP505's, that's available in MA, now.

 

Probably the best looking rim for our C5s, these come in 2nd place.

 

I'm kinda fond of my SP500's.

 

To each own. I like the wheel but stay away from the 20 in wheel. I have personally seen to many big wheels bent after finding a pot hole
Good luck.

 

I agree about 20s. 20" wheels on a C5 are only for style - I am not aware of any 16" brake rotors you'd need a 20" wheel to clear.

Once you go 20, your ride gets worse and yes, you have a higher risk of damaging a wheel due to that much less sidewall.

They are also heavier, and there's a sweet spot for sidewall profile for performance.

Also more expensive.

Looks are the only advantage (and that too varies per person.)

Realistically, 18 all around is probably optimal for most people, but you may have issues with your fancy driving electronics if you go fully square. 18 allows you to clear some rather large rotors and calipers, and you can get 18xWIDE from various manufacturers of both wheels and tires.

But you do you

 

19's just clear my 14 inch rotors calipers

19 inch CW 505A with 14 inch rotors just clear the calipers ...19 in CCW 505 A

 

Toque had to grind his stock calipers for spoke clearance, with his rear 14" Baer Eradispeed rotors and 19x11 CCW's.

What front rotors are on your car, Bill?

 

I only know that I like the looks of those wheels so no flared fenders.So maybe 18 and 19 or 18 all around. And a 40 profile.It looks like about $4500 to $5000.

 

I can fit a 17 over my rear c6z brakes, it just depends on the wheel and offset... I agree with sticking with a 19 in the rear, 20s just look weird to me personally on these cars but if that's what you really want then go for it... those wheels are not cheap so get the ones that make you happy

 

You just cant say you want to run a 40 profile. You need to first establish the wheel diameter you want to use ,... off set and back space have nothing whatsoever to do with rotational caliper clearance. Since the caliper sits inside the wheel barrel no mater where its sits in the barrel the clearance will be the same. Back space and offset determines where the load is placed on the wheel, ( ideally in the center of the wheel ) from front to back and where it sits within the wheel well. ( so it does not rub the inner tub or extend past the apex of the rear quarter panel on the outside. Many people screw this up. The wheel, when mounted should fit inside the wheel wells. Finding a set of tires that " Fit " properly, and have the correct stagger.... 0.75 inch to 1.25 inch. front to rear, is not a simple matter. You have to find tires ( with the correct outside diameter ) that are available to create a stagger and in the size diameter you choose. You are spending a lot of money. Make sure, you listen to the right people, and get the correct wheels that will fit your car properly and tires that will fit those wheels , and have the correct stagger. Not everyone here is an expert. You dont want to spend 5 grand and not have them fit your car.

Good Luck
Bill aka ET

 

offset definitely matters, you get the wrong offset and it will clear your rotor but the wheel will not sit flush against the hub because the caliper is making physical contact with the spokes and all of a sudden you have to use spacers and if you're lucky the wheel won't stick out afterwards... just call ccw, it will be less stressful

 

While some may hate a 19/20 set up on a Vette. I actually love mine.
front tires are 275/30/19 and rear tires in the picture are 305/30/20. I have since moved to a 315 rear tire set up.

The only issue going with larger wheels is the factory brakes look tiny in the back.

 

I should have made myself alittle clearer. I bought two sets of CCW 505's from john. The original set was for a stock C5 with stock brakes and rotors.
The second set I bought was also 505 A's ( Obviously I liked the style ). I bought them for the increased width, and to cover my 14 inch Eradispeed 2 piece rotors, and to accommodate my 2" wide flares.. IN both cases. I told John what I had, and He set the backspace and offset. Naturally they fit perfectly. I remember Toque telling everyone he had to shave his calipers to fit. I also posted that when John made mine, they fir correctly.. I dont know if Toque told John what backspace he wanted, but they should have fit.

The way I see it is the manufacturer should know how to build a wheel for a specific car. He puts the program parameters into the CNC. I gave him no input ( in either case ) on how to build them. That would be like telling the doctor how to do your open heart surgery. Backspace and Offset are things the wheel manufacturer should know. I only know mine because I asked. If you buy wheels off the shelf, you live with what is available. CCW use to stand for Complete Custom Wheels. IM not sure how the company is run now. But Both set of mine took 4 or 5 weeks to get. Each wheel started with a solid forged ingot of aluminum that weighed 60 lbs.

On a side note, my original set of CCW wheels were sold even before I decided to sell them. I only made mention of the fact I was going to do wide body quarters and I just ordered new CCW's. ( I was not going to sell my first set of wheels, I did not want to go through the hassle. ) The very first day I posted I was getting new CCW, someone contacted me, and talked me into selling them to him. Point here is they are very desirable, especially if you take care of them. The guy drove up from Virginia, brought home made cookies and cake and we had a great day together, talked some Corvette stuff, had a great lunch and a memorable day.

 

After thinking about it, I realized your rear CCW's are 19x13's, whereas Toque's were 19x11's. The latter wheels were +54 offset, while your 19x13's were probably in the range of +24 to +30 offset. (because of the widebody) That inch difference in offset is the reason there was no spoke/caliper clearance issues. Yes, you can leave it up to the wheel manufacturer and hope they get the offsets the way you want them. You can also specify the specs you prefer. Contrary to popular opinion, there is some leeway on wheel offsets, to set the wheel in the fenderwell where you want it. CCW/Weld is not the only wheel company that does this. Most of the better wheel companies are happy to build wheels, to your specs. Learning offsets and backspacing is not rocket science, though some seem to think it is.

 

My first set was 19 X 11 rears 19 X 10 fronts.

 

it's possible the 505 spokes might have a different curvature, than the 500's. I might ask Andrew Birkenfeld @ CCW about that possibility.

 

also a possibility that they were a different offset, just because both are 19x11 doesn't mean they have the exact same offset... just a mm or two difference in offset could be all that matters between clearing or not clearing a caliper and may not be noticeable as far as sticking out of the wheel well

 

I've thought about that too but a +54 offset is about the minimum for a 19x11, before it starts poking out of the fender. A +61 offset is also popular for that width but would seem to make the issue worse, not better.

I think I'm going to talk to Mark, aka Toque, and pick his brain a little.