any idea?

 

where do u live?

 

I live in Maryland

 

I am running 19" and they look and run nice.

 

id go 19's, that body style is nice and bulky, so 19's would set it off. i dont know what ur roads look like, but aslong as u know how to drive i think u should be alright

 

The roads around my area are moslty good, there are a few areas that are bad in the backroads but nothing wou cant avoid, The main thing i was worried about was snow but i'll just put my old ones back on.

 

Yeah, 18's or 19's you'll need to keep your stockers for snow... 19's you'd need to lower IMO, or it'll look like a monster truck, though, the same might be said for 18's (although a B6 with sport suspension could prolly pull of 18s).

And price rubber.

 

the shop that i go to for wheels give you Kumho tires when u get wheels from him. I mean its a pretty good deal and they are nice tires

 

if your streets are ok go with the 19s but i like 18s better though
keep two set the winter and regualr

 

hah, I guarantee you you're not getting the kuhmo's for free... its all worked into the price dude
and kuhmo's are cheap tires... factor that in with heavier wheels... and get ready for some poor stopping distances.
18's have many benefits... 19's have one -- aesthetics (unless you spend 6 grand on some 3 pc HRE's or something)
I'd take 18's with potenza's over 19's with kuhmo's... i've said this before, but the bigger the wheels get, the crappier the tires people buy -- and its a poor trade off, dumping performance/safety for looks.