I'm Aurocrossing mine at least twice a month and I have 10k on my Pilot Sport 2s and they still look great. You can see by the autocross videos that I'm pounding them pretty hard. I've been very impressed with them. I would guess that I have at least 12 - 15k left on them, at my current pase. For the way am abusing them, I think, if I get 25k, that's pretty darn good.