Abstract: The invention provides a method and an apparatus for monitoring vehicle tires, in which a desired range for the operating condition of a tire, (represented by at least one tire operating condition variable) is predetermined. Instantaneous values of the at least one tire operating condition variable are recorded continuously and compared with the desired range in order to establish whether the instantaneous tire operating condition lies within or outside the desired range specified. The frequency with which, and/or the proportion of the overall operation during which the operating phases in which the instantaneous tire operating condition lies outside the desired range is determined throughout the entire operation of the tire.

Abstract: The invention provides a method and apparatus for monitoring tires on a vehicle to detect adverse tire operating states, by continuously measuring the distance between the associated vehicle axle (or a vehicle body part rigidly connected thereto) and the road while the vehicle is in operation. From this measurement, the tire deflection is determined, which represents a comparatively exact measure of the respective tire load. When the tire deflection determined leaves a predetermined desired range, a warning signal is transmitted.