There are similar options from BMW for our cars..
http://www.shopbmwusa.com/PRODUCT/38...IPPED-VEHICLES (you can find online for ~$800).
You can also have your stock wheel turned into something more substantial. Check out AutoCarbon wheels:
https://www.bimmian.com/STW/30#tabs
Not quite as flat bottomed, but our cars do not sit the same as the Audi's, so the geometry will need to be a little different.