Abstract: Apparatus for testing a wheel suspension of a vehicle, comprising at least one measuring plate adapted to be moved by an excitation mechanism, a first measuring device for each measuring plate for measuring vertical forces exerted by an air tire of the vehicle on the measuring plate, a processing unit for processing measured values provided by the first measuring device and a display unit for displaying a measuring result. Further, a second measuring device is provided for measuring a selected one of a position, velocity and acceleration of the measuring plate. The processing unit being adapted to determine a transfer function of the wheel suspension from the measuring values of the first measured device and measured values of the second measuring device, the wheel suspension comprising a plurality of system elements, each of the system elements carrying a system value.