I do a fair amount of canyon carving, by no means extreme enough to ever scrape anything, but quick nonetheless. I only have experience with the BT020's that are on the GTS right now and they seem to wear quite well although I don't know what mileage they had when I bought the bike.
My rear wheel is leaking a little so someday soon I'll have to cave in and get new rubbers for the bike and I will probably go with the 020's again. I am one of the lucky few that have a choice of Santa Monica Mountains or Los Angeles Freeway System to get to/from work daily. Guess which one? hehe
