122 a2 and all the measurement wheels is that for tangentially introduced wheel forces the braking forces and the influences due to the road surface can be computationally differentiated by means of this measurement arrangement if a vehicle travels over a soft subsurface snow gravel soft ground puddle an accumulation of material forms in front of the tire and this must be pushed away pushing away in this manner causes a tangential force in the tire which has the same effect as the braking force due to the recording of the current braking forces these horizontally acting forces can be unambiguously subdivided into braking forces and into forces which act from the road surface onto the tire this advantage is all the more important because none of the measurement systems which carry out measurements in the region of the wheel rim and of the tire can differentiate between these forces this possibility optimizes the braking process in the soft subsurface in a braking process of a driven wheel furthermore the forces which act in the brake disk can be differentiated from the driving forces or driving torque which are introduced via the drive train this differentiation is necessary to permit optimum braking of these wheels when the clutch is not released i e there is engine braking this differentiation of the forces into driving forces from the drive train and braking forces is.