A wheel mount for storing and transporting a wheel, such as a spare bicycle wheel, is disclosed. The wheel mount is preferably substantially smaller that the wheel and attaches to an automobile or an automobile-mounted transportation rack. In one embodiment, the wheel mount attaches to a truck bed railing and has a slot for accepting a portion of an axle of a bicycle wheel, the slot restricting at least some movement of the bicycle wheel. In some embodiments, a cam mechanism common to many bicycle wheel axles can be engaged to further restrict movement of the bicycle wheel while it is in the wheel mount.