I used these tires front and rear all of 2008, and brought them back for the end of 2009. They are a great tubeless 29er option, pretty light and can handle lots of terrain run with psi below 30 preferrably. Excel in dry conditions. No issues with the minimal knobbies on the tire. Ridden/raced mainly in New Mexico and Colorado, with 2 trips to Maui also. Set up on multiple converted non-tubeless rims with Stans. You get less weight than tubeless, but less hassles than trying to convert a non-tubeless tire. No burping, no sidewall cuts, not a single flat. Pretty long lasting and a good value.