I saw a '99 323i/premium the other day with wheels that looked slightly different than the 16" alloys that come standard. The (7) spokes appeared to be fully concave, rather than slightly convex like the standard premium wheels. They looked more like the 17" on the 328i/sport, but were definately 16". They appeared to be genuine BMW, & not a knock-off, and looked better than any wheel I've seen so far. Does anyone know the part number for these?