Tried one of the new desert IT's on the rear (110/100-18) and now have 170 miles logged. Terrain covered was typical socal desert - decomposed granite, rocky uphills, loose sand, etc. I am very impressed with how this tire has held up so far compared to the Dunlop 739 it replaced. Knobs are slightly rounded on leading edge as would be expected, but no chunking. Hookup is good all around with minimal slithering in the loose stuff. Very good tire for these conditions and reasonably priced. The previous Dunlop wore like cheese and looked like hammered doggy doo after a couple of rides , and I am not overly aggressive with the throttle. Not to dis Dunlop, as I am a big fan of the 756 for the front, but their 739 compound could stand to be improved. My only complaint about the Maxxis, which isn't reallly fair, is that it is a bi*** to put on - the carcass is stout!