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adrian993
Silverstone


Joined: 01 Jul 2014
Posts: 112



PostPosted: Fri Nov 11, 2016 10:30 am    Post subject: seeking some genuine cup wheels... Reply with quote

I've purchased Rays car and currently giving it a bit of TLC..

on my list is a set of genuine cup rims,

looking for x7.5 fronts and x9 rears

if anyone knows of a set I would be very grateful.

Thanks everyone!
 
  
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cableguy
Albert Park


Joined: 10 Sep 2007
Posts: 1727
Location: North Yorkshire


PostPosted: Fri Nov 11, 2016 10:47 am    Post subject: Reply with quote

Cup I's are getting difficult to come by and commanding strong money now. Cup II's seem to work and look well and a fair chunk cheaper.

I have a set of Cup II's but if it's Cup I's you're after then good luck with your search. Wink

C.
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Mondrian
Monza


Joined: 30 Apr 2014
Posts: 184
Location: Hampshire


PostPosted: Fri Nov 11, 2016 11:37 am    Post subject: Reply with quote

7.5 is rather rare so best to aim for 7. I think I saw a set for sale in mainland Europe, pm your email if interested.
 
  
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adrian993
Silverstone


Joined: 01 Jul 2014
Posts: 112



PostPosted: Fri Nov 11, 2016 2:46 pm    Post subject: Reply with quote

The 7.5s originate from the 928 i think... Any 928 forums maybe they are worth a try?
 
  
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Mondrian
Monza


Joined: 30 Apr 2014
Posts: 184
Location: Hampshire


PostPosted: Fri Nov 11, 2016 2:56 pm    Post subject: Reply with quote

& 968
 
  
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adrian993
Silverstone


Joined: 01 Jul 2014
Posts: 112



PostPosted: Fri Nov 11, 2016 4:43 pm    Post subject: Reply with quote

Hmm where should I start looking Dont know
 
  
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ras62
Montreal


Joined: 20 Jan 2012
Posts: 620
Location: Cheshire


PostPosted: Sat Nov 12, 2016 9:30 am    Post subject: Reply with quote

Well done buying Rays car Adrian, its a good car and very sensible money. Why the need for the wheel change? The MM wheels it has are virtually identical, in fact I prefer them!
 
  
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917k
Indianapolis


Joined: 02 Jun 2003
Posts: 2479
Location: Bromley, kent

1990 Porsche 964 Carrera 4

PostPosted: Sat Nov 12, 2016 9:49 am    Post subject: Reply with quote

ras62 wrote:
Well done buying Rays car Adrian, its a good car and very sensible money. Why the need for the wheel change? The MM wheels it has are virtually identical, in fact I prefer them!


Virtually identical, but they weigh an absolute ton
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ras62
Montreal


Joined: 20 Jan 2012
Posts: 620
Location: Cheshire


PostPosted: Sat Nov 12, 2016 10:11 am    Post subject: Reply with quote

A common misconception, size for size they are almost identical Hand
 
  
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917k
Indianapolis


Joined: 02 Jun 2003
Posts: 2479
Location: Bromley, kent

1990 Porsche 964 Carrera 4

PostPosted: Sat Nov 12, 2016 11:41 am    Post subject: Reply with quote

ras62 wrote:
A common misconception, size for size they are almost identical Hand


No misconceptions at all, merely facts

MM 48kg a set

Factory 42.2kg a set

As a comparison the 996 10 spokes on my car weigh 35.4kg a set (lighter than magnesium cup 1s even)
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ras62
Montreal


Joined: 20 Jan 2012
Posts: 620
Location: Cheshire


PostPosted: Sat Nov 12, 2016 12:46 pm    Post subject: Reply with quote

You are using the weights for a 7 inch original wheel not a 7.5 as the MM. In 7.5 fitment both weigh 10.5kg. The MM 9 inch rears are 1kg heavier due to the offset which spaces the wheel out by 3mm filling the arch better.
 
  
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adrian993
Silverstone


Joined: 01 Jul 2014
Posts: 112



PostPosted: Sat Nov 12, 2016 3:50 pm    Post subject: Reply with quote

Just have a penchant for oem products that's all, the wheels are in great condition and will be needing a new home soon so if anyone wants a good set of rims, mint condition, let me know!
 
  
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Mondrian
Monza


Joined: 30 Apr 2014
Posts: 184
Location: Hampshire


PostPosted: Sat Nov 12, 2016 4:25 pm    Post subject: Reply with quote

For the record there is a good list on below link for size/weight/offset comparison.

http://www.944racing.de/felgengewichte.php
 
  
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Mondrian
Monza


Joined: 30 Apr 2014
Posts: 184
Location: Hampshire


PostPosted: Sat Nov 12, 2016 4:59 pm    Post subject: Reply with quote

These are a bit on the expensive side so might want to wait & see if something more local pops out!

http://www.wichers-porsche.com/onderdeel/porsche-cup-2x9jx17-et-55-nieuw-en-orgineel-pw-591/
 
  
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-Teme-
Newbie


Joined: 21 Aug 2015
Posts: 29
Location: Finland


PostPosted: Sat Nov 12, 2016 5:52 pm    Post subject: Reply with quote

You can still buy the genuine Cup I wheels new if you want to: http://www.rosepassion.com/en/cat/porsche-964-1993-964-carrera-2-coupe-automatic-gearbox/M222/rims-and-track-wideners-and-accessories/rim/B545/wheel-rim-nut-antitheft-kit-inflator/I2343/alloy-wheel/Z65346/P47818
 
  
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adrian993
Silverstone


Joined: 01 Jul 2014
Posts: 112



PostPosted: Sat Nov 12, 2016 6:09 pm    Post subject: Reply with quote

doesn't look like the 7.5J is available and seems in the wrong offset

i believe for 964 they need 7.5J ET65 and 9J ET 55
 
  
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Mondrian
Monza


Joined: 30 Apr 2014
Posts: 184
Location: Hampshire


PostPosted: Sat Nov 12, 2016 6:29 pm    Post subject: Reply with quote

7 & 9 offset on originals is 55, Rose passion list 7.5 as 55 too but not sure if it's correct. I don't think 65 would be a problem though but check with those in the know.
 
  
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adrian993
Silverstone


Joined: 01 Jul 2014
Posts: 112



PostPosted: Sat Nov 12, 2016 7:13 pm    Post subject: Reply with quote

learning something new everyday

for the 928 gts it's 7.5 et65

For 964rs it's 7.5 et55

For regular C2 it's 7.0 et55
 
  
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-Teme-
Newbie


Joined: 21 Aug 2015
Posts: 29
Location: Finland


PostPosted: Sat Nov 12, 2016 7:14 pm    Post subject: Reply with quote

The stock wheels for the 964 were 6x16 ET52 up front and 8x16 ET52 at the rear. The 17" wheels were an option at 7x17 ET55 up front and 8x17 ET52 at the rear.

I run a wider 9x17 ET55 rear wheel, which I believe was the 964 Turbo rear wheel size. But it fits without problems on a narrow body 964 at the rear.

Each to their own, but I would not put replica wheels on a Porsche. But that's just me.
 
  
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ras62
Montreal


Joined: 20 Jan 2012
Posts: 620
Location: Cheshire


PostPosted: Sat Nov 12, 2016 10:19 pm    Post subject: Reply with quote

The original wheels were made in Italy by MM and Speedline iirc so describing the MM as a rep is a mute point. The MM offsets 52/47 are better on the 964 than the original wheel's 55mm offsets as it means front and rear wheels sit further outboard by 3mm/8mm respectively. The 7.5 inch front also allows the fitment of a 225 tyre which many prefer as it adds front end grip.
The cup race car wheels also fit, these are 8 front with 52 offset and 9.5 rear with 65 offset that requires a spacer to work.
 
  
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