I've been autocrossing on Kumholio 712's for two seasons (well, now I have 711's in the rear for that added rotation :rick: ). They're good for a beginner tire. They've held up pretty well and have decent grip.

If you want the best bang/buck in a street tire, its gotta be the Falken Azenis though. IMO this is the best street tire short of the BFG KD (which is ungodly expensive). If you can get a great deal, go with the Kumholios, if you want the best autocross S-tire go with the Azenis.

As for size, Azenis run a little fatter than most tires, so a 205mm width would be a little big for stock rims (I used to have fat fives too ), but should be OK due to the Azenis' super-stiff sidewall. If you go with the Kumholios, a 195/50/15 will give you quicker response and better steering feeback than a 205mm, but the 205 will have a touch more grip. On the 15x6, I prefer the 195mm (i've used both)