i'm flirting with the idea of 19" but i also autox. i'm wondering if these two things just don't get along (fyi: running 18" on vw drivergear springs right now, which give me a ~ 1" drop).
Wouldent recommend it. I have 225/40/18's that I autocross on and I regret getting them for autocross despite the fact I love how they looks for daily use. They arent bad by any means,but if ur serious about autocross then go with 17's you can run more tire that way.
I autocross on my Huffs. but next season I'll be picking up a set of wheels just for autocrossing. probably 16" or 17" depending on what kind of deals I can find.