I'm new and was searching for fellow Audi drivers when I found this thread.
Obviously the car is GS, but as for wheels... My stocks are 17x7.5", I don't recall the offset off the top of my head.
Two years ago I got some Kosei K1's from tirerack: http://www.tirerack.com/wheels/WheelCloseUpServlet?target=wheelCloseUp&wheelMake=Kosei&wheelModel=K1+TS&wheelFinish=Silver+Painted
I love them. They were affordable and lightweight. Unfortunately they aren't being made any more, but if you can find a used set, at 15.4 lbs 17x8" they are great wheels.
My dad road races (a bmw) with a set of these: http://www.tirerack.com/wheels/WheelCloseUpServlet?target=wheelCloseUp&wheelMake=Enkei+Racing&wheelModel=NT03-M&wheelFinish=Bright+Silver+Paint
and at $235 and 17.8 Lbs for the A4, they are a pretty good deal.
Those are the only wheels i've had expierence with.
How have you liked autoxing your A4?
2006 Audi A4 2.0T Quattro 6MT (GS)