thedyingiraffe

Ok... about CUP 1's.

I found a set and theses are the numbers written inside the rims:

1.) 7Jx17AH-ET55, GK-AlSi12Mgwa, 965.362.124.01 SW
2.) 7Jx17AH-ET55, GK-AlSi12Mg wa 965.362.124.01
3.) 9Jx17-ET55, GK-AlSi7Mg 965.362.128.00 SL485 Made in Italy
4.) 9Jx17-ET55, GK-AlSi7Mg0.4wa, 965.362.128.00 SL485 other # TO6E, B586 Made in Italy.

What do we have here? Real or not?

I just read (after a serach) that CUP I's are made in Italy? Is this correct.

ltc

Those appear to be valid 11 digit Porsche part numbers, so I don't think they're replicas.

The 'Mg' makes me think they're magnesium lightweight Cup wheels (from the RS), but I've never seen one in person, so I'm not sure.....best to run the #s thru PET and see.

Culina

Need your help with this. What would this number indicate?

• 7JX17 AH-ET55 GK-AlSi112mg wa
• 8JX17 AH-ET52 GK-AlSi112mg wa

Is this from RS model or magnesium? the valve stems also indicate the same offset

Thank you in advance

FrenchToast

7JX17 = 7" wide wheel, J-type bead seat, 17" diameter.

ET55 = Offset of +55mm

AlSi12Mg is the type of metal alloy. It stands for aluminum, silicon, magnesium. Many aluminum alloys have silicon and magnesium in them. I think the 12 represents the average silicon content.

Don't know what the other letters are.

Magnesium Cup wheels say "magnesium" on the outside lip, as I recall.