Wheel measuring system

A measuring device for measuring motor vehicle wheels, comprising a rotary and clamping unit carrying the wheel to be measured, as well as at least one measuring station arranged near the periphery of the wheel, with a positioning sled system designed in the form of a cross-sled, with a transducer with computer-controlled positioning drive, the transducer being connected to the cross-sled and having a measuring roll for performing concentricity measurements, lying with nonpositive locking against the periphery of the wheel, as well as a process computer for carrying out the measuring process according to a predetermined program and for processing the measured values, wherein only one measuring station is provided with a profiled measuring roll (20), which has different profiles (21, 22, 23) axially behind one another for lying against the rim flange (12), rim shoulder (13), rim hump (14), rim bed (15) or similar regions of the rim, wherein the cross-sled (40) has two motors, which are perpendicularly arranged to one another, the advancing force and direction of which and thus the pressing force and pressing direction of the measuring roll (20), lying against the wheel (10), can be altered to control the motor current as a function of the predetermined program, wherein the position of the sleds (41, 43) of the cross-sled (40) is measurable with a distance sensor (42, 44) which is electrically connected to the process computer and wherein the positioning drive of the transducer can be controlled by the process computer in such a way that the measurements of the areas of the rim (11 to 15) are performed sequentially in time with the profiled measuring roll (20).