I think I saw someone post a pic already of an X with this or was it at another site. Let me check ...

Here it is .. post #19:
http://www.xoutpost.com/x5-e53-forum/...ight=style+128

I think they look great and actually think 21 is the perfect wheel size for the X5. 20s seems a tad too small and 22s seem a tad too big - 21s perfect!