A wheelchair (10) comprises a frame (14) and first and second rear wheels (12) that are each independently mounted to the frame via a respective mounting hub 16. Each rear wheel is detachably mounted to its respective mounting hub at two or more distinct hub mounting points (62, 64). Either or both of the hub mounting points (62, 64) can be movable with respect to a remainder of the hub (eg. via a pivoting arrangement). A disk (18) can be positioned at the rear wheel (12) and a stop element (76) located at the mounting hub (16) can be selectively operated to interfere with the disk to prevent rotation of that rear wheel. Each rear wheel may comprise a push-rim (22) having an elastomeric outer layer (24) to facilitate manual gripping and an externally facing generally flat side face (26). The frame (14) can comprise first and second spaced apart and unitary tubes (30, 32) which each extend in an unbroken manner from a wheelchair seat (36) to a wheelchair forward region (38). First and second backrest members (50, 51) can extend generally upwards from a proximal end of the frame (14), and each backrest member can be pivotally connected to the frame via a respective mounting hub (16) to enable adjustment of the backrest members with respect to the frame. Also, a backrest portion (60) can be slidably attached down onto and be detachable up from the backrest members such that, when slid down, its underside (61) can sit on the seat (36).Linvention concerne un fauteuil roulant (10) qui comprend un cadre (14) et une première et une seconde roues arrière (12) qui sont chacune montées de façon indépendante sur le cadre par lintermédiaire de leur moyeu de montage (16) respectif. Chaque roue arrière est montée de façon amovible sur son moyeu de montage respectif en au moins deux points de montage (62, 64) de moyeu. Lun ou lautre ou les deux points de montage (62, 64) de moyeu peuvent être mobiles par rapport au reste du moyeu (par exemple au moyen dun dispositif de pivotement).
