nee.dragger

I have a set of CUP 1 alloy wheels, and I'm not sure if they are factory or replicas. How do I know if they are factory wheels or knockoffs? They are 7 1/2 j x 17h front and 9j x 17 h rear. I don't see any Porsche parts numbers on them. I thought if they were replicas, there would be a company name somewhere on them, but I can't find one. They have Made in Italy cast on them on the back side of the wheel, so I'm thinking they aren't factory. Anyone know how to tell what they are?

UncleMaz

Made in Italy = non-factory. I have the same ones.

GlenL

And no Porsche P/N then it's not Porsche.

Vilhuer

Easy way to tell if CUPs are original is to see if there is width and ET number cast around valve hole. Only original versions have them.

pcar928fan

Only the original factory wheels will have the RDK sensors in them and ALL 928 Cup 1 wheels have them. I think some variation (ie. width or offset) of the Cup 1 might have been used on other P-cars and I guess they would NOT have the RDK holes and sensors, but I am not positive on that.

Agree with the above though...ALL factory Porsche parts have Porsche part numbers on them!