With a nod to the success of the Butcher tires in downhill competition we built this exceptional tread into a tire for all mountain riders. The Butcher GRID 2 Bliss Ready excels in the gnarliest terrain with fast-rolling ramped center knobs & perfectly sized shoulder knobs that bite in the corners. Youll also find our GRID casing that dramatically improves cut-resistance & sidewall stiffness.> Casing: Additional cap ply for exceptional durability plus added sidewall stiffness for stability. Also 23% enhanced cut-resistance over Control model.> Bead: Foldable> Butyl wrapped bead = 2 Bliss Ready> Compound: Base 70a / Top 42a> 650b x 2.6; psi 20-40; approximate weight 985g