Device for supporting motor vehicle wheels when taking suspension geometry measurements

Device for supporting motor vehicle wheel when taking suspension geometry measurements comprising a structure (1,1') provided with ball shaped supports (7) for its free resting on an underlying horizontal surface (15), characterized by further comprising:

• a pair of rollers (8,8') with parallel axes, rotationally supported by said structure (1,1') and supporting a wheel (16) mounted on the vehicle (14),
• means (11,26) causing rotations of one of the two rollers,
• means (21,21',33,33') acting on said horizontal rest surface (15) to neutralize on command, the effect of said ball shaped supports (7) and to firmly bind said structure (1,1') to said surface (15) when the rotation of said one roller is caused,
• the two rollers (8,8') of each pair being associated with members for being spaced apart to each other in a direction transverse to their axis between two end positions, in one of which the two rollers are on opposite sides of the zone of contact between said wheel and said resting surface (15), and in the other of which the two rollers are closer together to support said wheel (16) raised from said resting surface.