Schwalbe Smart SamThe Schwalbe Smart Sam bicycle tires offer great durability, great traction both on and off road at a price that is hard to beat. It was no easy challenge for Schwalbe's senior developer. The result, however, is outstanding. The tread of the Schwalbe Smart Sam is modern and balanced at the same time. The compact central rib provides comfortable rolling; the edged outer lugs guarantee optimized off road grip. For this reason Smart Sam is reliable in