Fatbike

A fatbike (also called fat bike, fat tire, fat-tire bike, or snow bike) is a bicycle with oversized tyres, typically 3.8 in (97 mm) or larger and rims 2.16 in (55 mm) or wider, designed for low ground pressure to allow riding on soft, unstable terrain, such as snow, sand, bogs and mud. Fatbikes are built around frames with wide forks and stays to accommodate the space required to fit these wide 26" rims and tires. The wide tires can be used with inflation pressures as low as 34 kPa; 0.34 bar (5 psi) to allow for a smooth ride over rough obstacles. A rating of 55–69 kPa; 0.55–0.69 bar (8–10 psi) is suitable for most riders. Fatbikes were developed for use in snow or sand, but are capable of traversing diverse terrain types including snow, sand, desert, bogs, mud, pavement, or traditional mountain biking trails. In the 2020s, fatbikes have seen increased usage in urban areas as well.