Cup 1 Difference

[911kev]

Posted on 964 forum, thought i'd post there here too:

Is there a visible difference looking at the wheel between an OEM Cup 1 and a replica. The wheels I'm looking at, have 7 and 55, and 9 and 55 by the valves.

 

[964RS_DAB]

Replicas are usually ET47 rear and ET52 front. ET55 suggests they are OEM wheels, the Porsche part number should be stamped on the inside of the wheel .

 

[911kev]

Thanks for the reply David. Wheels are filthy dirty on a car, so was trying to see in there was a quick way of identifying from the outside.
I think you are right about the offsets.

 

[Melv]

Offset should be stamped on outside of wheel.

 

[Ian964]

If they have the width and offset embossed either side of the valve, then they're genuine Porsche - the MM replicas don't have this.

 

[ChrisW]

9 / 55 wheel should have the part number 965.362.128.00 inside the centre of the wheel.

7 / 55 should be 965.362.124.00 and .01

The Mille Miglia Cup 1 wheels have slight edges to the curve of the spokes --- ad don't have the size and offset either side of the valve. They are also 7.5 / 55 and 9 / 47.