Hi, got a set of audi a8 d2 20" alloy wheels, they are 8.5" wide and thinking to fit them to a c5 audi a6 lowered on Eibach springs. I need larger wheels as i have rs4 b7 front brakes to go which won't fit behind fat5 wheels without spacers, ! I have hp2 allroad brakes fitted at the moment and they are not man enough to stop the car from high speed ! As some may remember, it's fjtwelve's old a6 with double the stock power ! I have d3 9" wheels at the moment on my c5 allroad but i run 25mm spacers to clear the uprights. What is the best tyre size that could go on 8.5" wide rims without looking too stretched. I would probably go for Michelin Pilot or Falken tyres... Thanks !