Newton Provides abundant and surefooted traction in all conditions. Description Featuring a deep tread, firmly supported side knobs, and advanced compounds, the Newton provides surefooted traction in all conditions. As befitting a tire named after the man who defined the laws of gravity and motion, the Newton is the enduro and downhill rider’s choice; it’s the tire to reach for when the terrain gets steep and traction is of the utmost importance. Acronyms Explained EN = 1.5 Ply Construction DH = 2 Ply Construction Premium = Balanced Weight and Durable Casing Fabric Ultimate = Lightweight Casing Fabric TC = Tubeless Complete Dynamic:R/T = Rugged-Terrain compound specifically formulated to balance grip, wear and efficiency. Dynamic:RS/T = Rugged Soft-Terrain compounded formulated for maximum grip.