Force determination system for vehicle tyre profile elements

The system includes a test body especially a test drum (1) rotationally located in a frame, for measuring the forces acting on tyre (17) profile elements. The test drum (1) has a casing surface with especially a cylindrical test surface, with at least one recess. In the recess a three component force sensor for the measuring of three non-parallel force components is arranged, especially in a vertical direction, in circumferential and in the axial direction of the test drum. A vehicle tyre is mounted in its measuring position during the measurement under frictional contact between the tyre surface and the test surface, especially the drum casing surface. A motor (6) is provided with a pulley drive for rotating the drum (1) and the tyre received by the mounting. Non-contact data transmission of the force components is provided measured by the sensor (23-25) from the drum. The data is transmitted to a computer (8) for data determination and evaluation outside the drum.