The Schwalbe Smart Sam tire is an excellent mountain bike tire suitable for both road and off-road use. The tire's tread pattern provides a comfortable and durable ride, with a compact center tread for low-vibration rolling and angular side knobs for optimal off-road grip. The tire has an ETRTO size of 57-559 (26 x 2.25 inches) and is a clincher. The rubber compound is Addix and the model is Performance. The tire is black and has a Lite skin. It weighs 765 grams and the tire pressure ranges from 1.80 to 3.70 bar (26 to 54 psi). The maximum load is 110 kg and the EPI is 67. The tire has a HS476 tread pattern. Compatible inner tubes are 13, 14, 14A, 13D, and 13F. Product specifications: - Size: ETRTO 57-559 (26 x 2.25 Inch) - Type: clincher - Rubber compound: Addix - Version: Performance - Color: Black - Skin: Lite - Weight: 765 grams (27 oz) - Tire pressure: 1.80 - 3.70 Bar (26 - 54 psi) - Max. load: 110 kg - EPI: 67 - Profile: HS476 - Inner tubes: 13, 14, 14A, 13D, 13F