I just put these tires on my CRF250R, that i set up for woods riding in the Appalachian Mtns. of ohio, WVa., and KY. These tires are AWESOME in the red clay mud, and sandy loamy soil I encounter. Great side bite, incredible straight line hook up. Downside-- they suck on hardpack, which I usually don't encounter(maybe 10% of the time). I will be buying these tires again.
http://www.maxxis.com/products/motorcyc ... asp?id=269