I didnt have time to buy a new front tire for my 06 450, but i did have time to buy all new gear, including a dope helmet. 20 min into riding & struggling with that damn tire in the sand, i took a good spill and scratched up my brand new helemt. doh! well i should have taken all the advise and got that new tire sooner! man what a struggle in the sandy conditions in SoCal, it was REALLY bad. other than that the bike was awesome! still waiting for my new bars though =/. get a new one if you ride soft stuff!!! i was at el mirage which is pretty high alt. i am running 48p/170m and it was prolly a bit rich, but not too bad. maybe i need to go 45/165??? since i tend to ride high desert more than any other area.