A disc brake assembly (1) of the kind including a calliper (6) and two pad assemblies (3, 4), each of which is operable to engage a respective opposite side of a brake disc (5) when the brake assembly is installed on a vehicle. The calliper includes a housing (8) having a cylinder formed therein, and a piston which carries one of the pad assemblies (3) is slidable within that cylinder. The calliper (6) also has a bridge (7) which is connected to the housing (8) and which carries the other pad assembly (4). A mounting arm (12, 13) is connected at one end to the combination formed by the pad assemblies (3, 4) and the calliper (6), and is connectable at its opposite end to a support (2). The arm (12, 13) extends generally transverse relative to the axis of the calliper cylinder and is deflectable relative to the associated support (2) in the general direction of that axis so as to allow the pad assembies (3, 4) to move towards and away from their respective adjacent sides of the disc (5). The arm (12, 13) is resistant to deflection however, in at least one direction transverse to the cylinder axis and functions to hold the aforementioned combination in an operative position relative to the disc (5) when in use.