Abstract: Attitude angles of motor vehicles are measured, in particular the toe-in and camber angles or the wheels. According to the invention: a) four laser-beam measuring heads are arranged in predetermined positions, one for each wheel, so as to define an invariable spatial reference system; b) a laser beam sweeping over a plurality of horizontal planes which are situated at a relative distance from each other and which pass through the plane of the wheel is emitted by each measuring head, and a signal representing the spatial position of measurement transition points (p1, p2, pj, pn) on the said wheel is captured on the beam reflected by the surface of the wheel; c) and finally, on the basis of the spatial position of a set of said measurement points (p1, p2, pj, pn), the position of the plane of the wheel and its axis of rotation as well as the characteristic angles formed by the plane of the wheel, with respect to said spatial reference system, are calculated.