My hunt for an RS4 is progressing at a rapid pace, and so far everything I need to know I think I have found out

However, how do I find out which wheels are fitted (Hard or Soft?) the dealer says he does not know....
Are there any tell-tale external signs? Or is there something stamped on the inside of the Wheel?
Sorry if this has been covered before, but a quick search of the Forums did not turn up any initial hits.
Thanks for the Help

--Roger