I have found several great wheels that look great on Audi A6 (C5). These are the wheels that I like most but it is very difficult to choose the best one. I have made several pictures with PhotoShop so you can see the difference. I would like to buy 18" wheels. 19" and 20" wheels are really expensive and maybe too big for Audi A6 but also should look great. Tyres should be 225x40. I think it is the best for 18" wheels. Now I would like to show you pictures I have made and in the near future I will show you my decision.