✔ 最佳答案
If I am not mistaken, your car should come with 17-in rims as std, unless you have equipped w/ S-link package (sports package) which bump the tire size to 245/40R18.
Assume you have 17-inches as original, going to 18-in is okay but for 19-in., you may need to check if you can clear (have enough room) for the fender and wheel wall.
For 2.4L engine, for sure your gas mileage will drop on 19-in. wheels.
BBS is a very good brand.
visit this site and you can see how the wheels look like on your car:
http://www.tirerack.com/upgrade_garage/WheelSearch.jsp?autoMake=Audi&autoModel=A6+3.2+Quattro&autoYear=2006&autoModClar=Base+Model
just click on the wheels and it will install it for you....have fun.