Here is a picture of my stock tires after 1000mi, 1 autox, and Phase 2 Evolution school. No wonder these tires were so grippy. They are way too soft for autox'ing.
http://images9.fotki.com/v184/photos/6/625190/2217851/IMG_0315-vi.jpg?500375
http://images9.fotki.com/v184/photos/6/625190/2217851/IMG_0315-vi.jpg?500375