I was wondering if anyone knows if these wheels would fit a 2002 Z3 3.0i, I'm looking for a second set of wheels for my car...

http://cgi.ebay.com/ebaymotors/17-CH...45 7172QQrdZ1

I don't really understand the whole offset/different sizes for cars...what if I have 17X7.5 up front and I put 17 X8? Anyone know of thread for this?

Thanks!