Knowing how a set of tires makes the difference in both mountain biking and motocross/offroad, I researched tires for my CRF extensively before purchasing these Maxxis Desert IT's. I ride desert mixed terrain, sandy to rocky conditions and these tires perform very well, especially the rear tire, and after about 1,000 miles shows some wear, the lugs still intact! The rear tire has plenty of bite, and really makes this bike move! Very predicable. The front tire wonders a bit, trying to find purchase, kind of twitchy, but I find that if I ride a tad bit forward on the CRF, the front handles better. The old Dunlop I was running on the front wasn't so sensitive to my riding position. Awesome tire for mixed desert conditions, wears like iron!