2000 A6 2.8Q wheel and tires advice?
 

Just purchased this stock 2000 audi A6 2.8Q. Want to lower it with H&R race springs and put some 20's on it. The wheels I want are Ace Zeus 20's. Would like some advice on tire size I will need and if this combo will rub or ride like crap. Let me know if you have any input on this wheel and tire combo. Included pics of stock ride and wheels I want and a photoshop pic of what it should look like, let me know what you think.

2000 C5 A6 2.8Q