audi a8 wheels - 19"s or 18"s
 

I've seen some pictures with audi a6's with the 19" a8wheels but i'm having trouble finding good 19" rubber that has the proper weight rating (93) for our cars. that i'm scared of messing it up on a pot hole because of the 35 series tire.

anybody have pics of an a6 (perf silver) with 18" a8 wheels? thanks