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I'm was install the CUPII wheels on my 928GT, Front: 17 x 8 ET70, Rear: 17 x 9 ET55. On rear axle, installed Eibach 18mm spacer.
Nice wheels-one of my favourite stock designs- remember to check/ensure that you have sufficient thread engagement on the wheel nuts when you fit the spacer- as I remember the GT should have a 17mm spacer and studs to suit as stock fitment - just make sure stock studs are fitted and no one changed them out- 1mm difference would probably be irrelevant
Thanks, found the spacers in the US for fair price, and the car does look great when fitted. Listing says weight is 9oz presumably for the pair, so not a significant unsprung weight penalty. May treat myself one day.
Follow up question that I really should know the answer to (but I'm on holiday so can't check): can I use the wheel centres from my Slots with the Cup 2s?
Following up on my original question is a great excuse to post a few before and after photos (it's not like I can go out for a drive after all)
I have been using AD08R in 235/40/17 and 255/40/17 which works great, although I'm a bit concerned that the latest AD08RS have been reviewed poorly in comparison
I haven't attempted to fit spacers on the rear, the cost was too much of a barrier, and I think it would be really tight especially under full compression