964TOK

My car is on D90's. I want to change to Cups 1 wheels. I have seen a set for sale.

Q: They say front 17 X8 / Back 17 X10. Should they not be the same front & rear?

Q: Do i need to fit spacers or will they go straight on?

Thanks
Derek

ilko

A: That's a very rare combo for cup cars, IIRC. Because your car is not a VW You have a RWD, rear engined Porsche, you need more rubber in the back.
A: Depends on what year your car is, but with those sizes you will definitely need modifications - spacers up front, and/or install 10mm steering stops and spacers in the rear along with flattening the oil line. You may need to roll your fenders as well.

Where did you find those wheels?

Southampton76

What are the wheel offsets?

Boeing 717

Wow id like to have those myself those widths are hard to come by i think. May i ask what your paying for them????


JERRY

964TOK

just called him....they are gone! they were about euro 1200 (incl new Pirelli's)

cobalt

Those aren't factory wheels. The factory cup 1's only came in 7 or 8 inch widths for the fronts and 9 inch width for the rears. 7 & 9's are ET 55.

dave morris

I think there were also 7.5jx17 with et55 and et65 (part # 965 362 124 15 and 05). Plus ... there were 9.5j17 with et68 (part # 965 362 128 05). I really like the Cup I wheels ... but they were all pretty heavy.

cobalt

Stand corrected I believe the 7.5 was used on the GTS and must have the sensors to work.

This is the list as I know it not including the magnesium versions. Can't get them to line up but I think you will get the idea.

7 J
7 J
7.5 J
8 J
8 J
9 J
9.5 J


55
55
65
52
52
55
68


965.362.124.00
965.362.124.01
965.362.124.05
965.362.126.00
965.362.126.01
965.362.128.00
965.362.128.05


9.3 kg
9.3 kg
10.6 kg
10.0 kg
10.6 kg
11.8 kg
12.5 kg

pete000

Just look fot a set of 7's and 9's and you will be happy dont bother with the Borbet replicas....Go factory. A 9" just went on ebay fro $250.00

dave morris

Hey, thanks Anthony. I just learned something because of your post. I've long wondered about the difference between the two 8jx17s. Now I know that at least one difference is that one weighs 22.0462 #s and the other weighs 23.36897 #s. I'm still wondering why Porsche made two so similar wheels. I suspect the same is true for the 7s, 7.5s and 9s (?) but haven't done the math. Hmmmm.....

dave morris

Anthony ... would you please elaborate on this. What GTS? And sensors are you referring to?

Greg964

Cobalt, would you happen to have weights for the Cup II wheels? It would be interesting to see how they compare size for size with the Cup I's.

pcarcraig

928 GTS

dave morris

Oh ... OK ... thanks Craig.

ilko

Dave, your wheel was picked up by UPS today