You will be riding on no suspension and I have not seen a 20" rim out there that doesnt make your car look like P-Diddy's. 19" only with suspension MODS. 18" is keeping the classy look these cars were designed for. Don't make something it's not.

 

Well ChrisShep, did ya decide ??? I put 17" wheels on for the winter with/ Bridgestone Blizzak tires. This summer 19" RS6 wheels and have not decided on tires yet. good luck on your choice... jtv4.2

 

I have 20's on my car. Just put 'em on. I think you might have some issues with a 2.7 though, as the 4.2 (like mine) has the larger fender flares. In my opinion, I think my wheels look very nice. And not "cartoony" (or worse) as someone suggested...

https://www.audiforums.com/albumphot...amp;sortType=6

 

I have 20" rims on mine .... i dont know if you can see them on my profile, and if you
cant see them....DAM!!! show me how to do that ...
But 20" make it wobbly and they rub once i a w hile...
I would suggest 19" just because i dont like the ride or the P I M P
look and they make the car look real high..

 

Well gang,I finally decided... wheels... 19" RPMR-505hyper silver/alum. * tires... bridgestone 275/30/19" They look awesome.