What makes an almost perfect all-rounder even better? No easy challenge for Schwalbe's senior developer. The result, however, is outstanding. The tread of the 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 every condition and even rolls well on roads. Product features Size: ETRTO 57-559 (26 x 2.25 Inch) Typ: Wired Compound: Addix Execution: Performance Skin: Lite Pressure: 1.80 - 3.70 Bar (26 - 54 psi) Maximum load: 110 kg EPI: 67 Profil: HS476 Tube: 13, 14, 13D, 13F Color Black Weight 765 g (27 oz) (manufacturer's information) Addix Performance ADDIX is also available in the Performance version. Very durable, very versatile. Like Speedgrip it is a universal compound only these tires are not as light and fast as tires from the Evolution Line.