With soft rubber compounds that stick to wet roots and rocks and well spaced knobs that allow the tyre to clean well this mud munching tyre is made for riders who wont shy away from an environmental challenge delivering traction in sections that most riders wont consider hiking over casing 60 tpi dual ply bead wire compound base 70a top 42a pinch protection butyl inserts at bead 650b x 23 psi 25 50