The open and aggressive tread design gives the High Roller II excellent soil penetration and mud clearing ability. A square profile provides a solid, consistent feel across the knobs. Modified knobs on the shoulder and center improve braking performance and traction on hard surfaces. When gravity pulls you downhill, rely on the High Roller II to keep you upright.Open tread designImproved braking and tractionSpecifications Conditions: Loose Over Hard, Medium, Loose, WetCornering Control: 1 2 3 4Rolling Efficiency: 1 2 3 4TPI: 60Bead: WirePly Construction: DualCompound: SingleMax PSI: 65TechnologyDual Ply (DH) Casing: Two layers of casing material are used from bead to bead, providing additional protection and sidewall stiffness for downhill applications.