I have no idea why anyone would choose a 912 over a 911, but that's not really relevant.
Post is on Xtwatter, but images re-pasted for anyone that doesn't have an XTwatter account.
1. Steelie-look alloys mit hubcaps (16")
2. Steelie-look alloys sans hubcaps (16"). aka the correct choice
3. Fuchs style (15")
4. 917-style (15")