Throrough bred downhill tire with large open lug spacing and agressive knob shape that bites into terrain of all sorts Throrough bred downhill tire with large open lug spacing and agressive knob shape that bites into terrain of all sorts Developed in coordination with downhill rider Eric Carter Many rubber compound combinations to suit all rider`s needs BI - Butyl Inserts above the bead for extra sidewall stability, rim protection, and reducing the chance of pinch flats DHC - Downhill Compound, features an added layer of the woven CAP ply under the tread that also covers the sidewalls of the tire down to the bead. RSR - Race StickE Rubber, is super soft and sticky for a variety of surface types and conditions