cup wheel's

stuttgart · stuttgart's Garage

hey Guy's will I need to get any spacer's to fit a set of 7" & 9"X 17 Cup wheel's on my 78 SC.. I know Leland had some .. if you read this leland did you use any?
Thanks ,
Eric McKenna
78 SC coupe

Leland Pate · 01-02-2002, 10:00 AM

Eric,
The wheels I bought for my car are actually aftermarket C2 replicas. If you buy the replicas they come with the proper offset for your car. It is a different story if you buy a used set of factory C2 wheels.
If you are interested, I suggest you call Wheel Enhancement, they will walk you through everything and explain what you can and can't do with your car.

I like the looks of them, but if I had to do it all over, I'd have kept my Fuchs as well. Whatever you do, DON'T SELL YOUR ORIGINAL FUCHS! I did and have been kicking myself ever since.

The replicas are heavier and are not as good of a wheel as the fuchs. They are basically "looker" wheels. As much as I hate to admit it.

I still like them though. I just wish I'd been smarter when I bought them.

stuttgart · stuttgart's Garage

They didn't help the rear stick any? I have Fuch;s yes, but the are only 8" in the rear and 7" up front..i was thinking the 7.5 up front and hte 9" in the rear would increase the handling. I take it you did not notice a huge diff? but i will hold onto the Fuch's now that you mention it. Thanks
Eric
SCWDP
78SC

Leland Pate · 01-02-2002, 10:07 AM

Well, I don't really know... i wouldn't say that there is an incredible HUGE difference in handling. The lower profile tires are a plus. But that is probably countered by the fact that they weigh more.

Definately hold on to your Fuchs.
I had 8" and 9" fuchs on my car... and I let them go...
damn, damn, damn...

stuttgart · stuttgart's Garage

I have made a promise to myself that if it oesn't make the car faster or lighter.. I will not do , and up of course.... but I am looking some wider wheel's. Thanks for the input.. I will for sure hold onto the Fuch's.. but may grab a set of Cup's as looker wheel's.. and for a bit of extra grab.
Thanks leland.
Eric
SCWDP
78 SC

Kevin Stewart · 01-02-2002, 10:46 AM

Hi the wheels you are looking for are 17x.75 and 17x9, with 15 and 23mm offsets, the 993 cup style wheels are getting hard to find in this set up new, these wheels are at least 10 lbs a wheel heavier then a Fuch, I have new c2 cup and the later style turbo twist style for 910 a set of four and caps are 120, these wheels look extremely nice on older cars, (i had a set on my sc before the widebody conversion) the only problem may be that you may have to roll the front lips, the rears have no lips, let me know if you are interested, Kevin speedwheel.net my site is currently down

stuttgart · stuttgart's Garage

Are these O.E, wheels ? and they are new you say.... what size spacer will I need to fit them? as the factory Cup's won't bolt right up to a 78 SC .. only the rep's will . is that the best price for them?
Eric
SCWDP
78 SC

Clark Griswald · Clark Griswald's Garage

The aftermarket replicas of the cup and cupII style wheels are about 10 lbs heavier than fuchs.

On the other hand, the factory cup and cupII wheels are very light and just a few pounds heavier than fuchs, and that is basically because they are bigger wheels. As you might expect bigger wheels are heavier! This even applys to fuchs.

You can put the factory wheels on the earlier cars by using spacers. Every car is a little different but the basic size is 1" spacer front, 1.5" spacer rear.

I have the 993 wheels on my 86 and I think they look great.

stuttgart · stuttgart's Garage

Thanks.... you've been a great help. I will try to track down some spacer's .. since i would rather have Factory Cups..
Eric
SCWDP
78 SC

stuttgart · stuttgart's Garage

If they are Factory .. 7.5 & 9's then give me a price and i may pick them up.
Eric
SCWDP
78 SC

Clark Griswald · Clark Griswald's Garage

Here is a pic of my car. This pic is old, before the car was lowered. But you get the idea.

These wheels come up used for sale from time to time. You can get a set for less than $1000. That is less than the aftermarket!

stuttgart · stuttgart's Garage

Yep,
Those look great Clark.. did lowering the car , have any adverse effect ? i.e. rubbing. my car is lowered as well. abit bit lower than most..it is set up for mostly track use but it is o.k. on the road.. a bit HARSH but good.

Kevin Stewart · 01-02-2002, 11:17 AM

Im not sure the spacers are the way to go, if you do please buy them from someone like boothe in excellence as they are wheel and hub centric, and are a quality spacer, if you buy just any set you WILL BE SORRY if they are not wheel centric, no one will tell you the exact spacer size because each car is built a little different, and they dont want to be resposible for any damage, you add 400 dollars to the cost of 900-1000 for a nice set of factory wheels (like new with no damage) is it worth the extra 500 to save 8lbs, then have to worry about spacers and taking the wheel off to retighten the lug bolts under the wheel, this should be done 25 miles after you put them on, then 50, then 100, then 500, for new spacers, after market wheels were made to FIT, with out the hassle of spacers and look exactly like oe, many of the after market companies in eroupe(Mille Miglia BBS etc) Do actualy make the factory wheels and have tested these wheels on cars for fitment, if you dont like the weight of aftermarket at least buy Fikse Simmons or a wheel to not only protect you but your car from a loose wheel, I have ran spacers before and was always worried they would break racing if i hit a curb etc, I guess you should weigh things for yourself, Kevin

stuttgart · stuttgart's Garage

I will have say that you have made some very good point's .. i will maybe thikn about some A.M Cups or simply look abit longer at some other option's.. thanks.. once again you guy's are the best!

Eric
SCWDP
78 SC

Kevin Stewart · 01-02-2002, 11:30 AM

If you have any more questions or just want some one to be honest about wheel fitments please e-mail me at Kevin@speedwheel.net we do wheels i would rather you have a safe fitment and buy from some one else then just go with a mixture of stuff just to get the wheels to work,
Thanks again, Kevin

stuttgart · stuttgart's Garage

Thanks Kevin,

emcon5 · emcon5's Garage

If you already have 7" and 8" X 16 Fuchs, you can go with 245/45 rear and 225/50 front. I am running this on my 82SC on 7 & 8" BBS wheels, with mildly rolled left front fender. No rubbing so far.

Tom

Tyson Schmidt · 01-02-2002, 12:12 PM

Someone mentioned that the replicas are heavier than the factory Cup wheels. I would like to refute that. I weighed the Factory 8" Cup 1 wheels that came on my car, and compared it to the 9" Replica Cup 1 wheels that I bought from Tire Rack. The 9" replicas were only 1 pound heavier.

The Cup 2's shown above may be lighter than the Cup1's, however. That may explain the discrepency.

Until I actually weighed them side-by-side, I thought the factory wheels were lighter too.

Fuchs of course, are much better wheels than any of the later model Cup 1's, 2's, and 3's, since they are all pressure-cast (Factory and Replica alike) versus Forged for the Fuchs.

You need to look at the number on the rim near the valve stem. That will tell you the offset. If it is a C2 offset, it will say something like ET52 or ET55. My 9" replicas say ET47, which is proper for a 9" on a C2. These will require a 1" spacer up front, and a 1"-1 1/2" spacer in the rear. (2" if you run a lot of negative camber)

If they are replicas made to fit the earlier cars, then it will have a funny looking built-in spacer appearance. I can't remeber what numbers these have on them.

Tyson Schmidt · 01-02-2002, 05:34 PM

Here are the part #'s for the factory Cup 1 wheels

7J X 17 AH ET55 965 362 124 00
7.5J X 17 AH ET65 965 362 125 05 (968)
8J X 17 AH ET52 965 362 126 00
9J X 17 AH ET55 965 362 128 00

There was an updated part number for these wheels when the inner spoke webbing was changed slightly, but I don't have those numbers. I believe the last digit of the part number was changed for these. Like 00 changed to 01, etc.

Clark Griswald · Clark Griswald's Garage

My experience is with the Cup II wheels only. I have never weighed the Cup I wheels, so I am sure you are right about those Tyson.

I ordered a set of aftermarket Cup IIs from the Tire Rack. They didn't fit the front. I sent them back and got the factory Cup IIs. The aftermarket wheels where boat anchors.

The wheel spacers do add about $400 to the price of factory. But if you are lucky you can find them on ebay for maybe 1/2 that or less. Every set of 911 wheel spacers I have seen are both hub and wheel centric.