The studded wheels are bolt on with 5 bolts, not know on with the central spinner. Bolt is by far the best option.
I looked at the two tone green when it was being sold about 4 years ago, it was lovely, but I missed it by a couple of days through my indecision. The wheels are still 5 spoke magnesium, just a slightly different design. It was registered in 2005 which is very late for an S1. When I viewed it in 2012 it had 6500 miles and was spotless.
That car has the best wheels and hood.
If it's still as good as it was, you won't find better. It even featured in a book.
Regards
Andrew