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I'm working on 991 Targa 4S visualization for a personal project and currently I'm modeling an RS Spyder wheel (20" & 21") for that. I'm trying to make it super nice and precise but there is only so much information I could find on the web (since I don't own these wheels), so I'm turning to you if maybe some of you could help me out with some measurements.
Here is what I know so far:

• PCD (5x130mm)
• PCD Through hole (15mm)
• Hub Cap (76mm)
• Rims: 8.5Jx20 ET53 & 11.5Jx20 ET67

The rest I eye-balled from hundreds of photos. If you will, would you mind taking a look at the image below? That contains the current state and all the measurements I would love to be able to refine for both the 20 and 21 inch versions. As I said, even one correct measurement brings me closer to realism; and don't hesitate to correct me on anything I mentioned above.
Thank you!

Drew46

A: 5/16
B: 1/4
C: 2 3/4
D: 2
E: 7/8
F: 1 1/4
G: 1 1/4
H: 5/8
I: 1
J: 1/4

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Thank you, this is excellent! Is this for 20 or 21"? I know a lot of the measurements would be the same but e.g. the end of the spokes will be different based on which size it's "cut-off" for.

Drew46

This was my front wheel so 20.