I'm using 245/45 Fuzion ZRi tires. Since I normally autocross and don't push the car on the street, I got these because they were cheap @ $80 a tire, but they did far better than I would have thought under the abuse, although the rears were getting quite greasy towards the end of each afternoon session (and as I started putting more power down coming out of oak tree)

I can't wait to they let me run my victoracers