Abstract: A method and apparatus is disclosed for precision adjustment of the suspension of motor vehicles, in which the wheels and axles are suspended with adjustable radius rods. All four wheels of the vehicle are supported by pairs of rollers carried by rotatable bases. The bases supporting the front wheels of the vehicles are mounted for lateral movement. Both the front and the back wheels are supported laterally by means capable of registering the force required to counteract any tendency of the vehicle to creep sideways when the wheel-supporting rollers are driven. Adjustments are first made to correct for any tendency for the vehicle to drift laterally. Measurements are then made at spaced points on the vehicle to determine the angle between its actual longitudinal center line and the ideal. On the basis of these measurements, the wheel track of the vehicle is also centered with respect to the vehicle. The invention enables an optimized adjustment to be achieved with great efficiency.