We worked with several world class downhill racers—including two-time world champion Fabien Barel—and used their feedback to redesign the Dissent 2.5. The new-for-2010 tire shown here features opposing-direction side knobs, deep tread and wide spacing, to keep you confident and in control. The Dissent excels in just about any conditions you encounter, from dusty alpine mountaintops to damp, loamy forests.