Schwalbe smart sam mtb tyre raceguardthe schwalbe smart sam is an unbeatable all rounder it goes well on any terrain and even on the road it rolls effortlessly the lightweight casing keeps rolling resistance to a minimum and the raceguard provides reliable puncture protection and cut resistance features bead wired casing liteskin raceguard compound dual pressure 30 to 55psi weight 680gtechnologies performance lineschwalbe performance line tyres are excellent quality for intensive u