The Schwalbe Smart Sam Plus is a premium all-rounder with an extra-thick 3mm GreenGuard puncture protection layer and a SnakeSkin sidewall. This tire is approved according to the ECE-R75 standard and offers absolute riding pleasure on e-MTBs. The Smart Sam Plus tread is modern and robust, with a compact center tread for smooth rolling and angular outer knobs for optimal off-road grip. This tire feels at home on any terrain and also rolls smoothly on the road. With Double Defense technology (RaceGuard and SnakeSkin all around the tire), the Smart Sam Plus is perfectly suited for use on e-MTBs. This tire is suitable for e-bikes up to 50 km/h and has the required approval for use on fast e-bikes (S-pedelecs). Product specifications: - Size: ETRTO 57-622 (29 x 2.25 Inch) - Type: Clincher - Rubber compound: Addix - Version: DD, GreenGuard - Color: Black - Skin: Snake - Weight: 1090 grams (38 oz) - Tire pressure: 1.80 - 3.70 Bar (26 - 54 psi) - Max. load: 121 kg - EPI: 67 - E-Bike: E-50 - Profile: HS476 - Inner tubes: 19, 19A, 19F Please note: For fast E-bikes (S-pedelecs) with a registration, insurance and pedal assistance above 25 km/h, special approval of the tires is necessary. It is recommended to use E-bike tires with the valid ECE-R75 approval for these E-bikes.