Improvement for balancing a vehicle wheel

A motor vehicle having a body 3 which is carried by suspension units 4 and wheels 1 and includes a device for calculating the angular position and mass of a correction weight while the vehicle is in motion. This device includes for each wheel a vertical accelerometer 10 for determining the vertical acceleration of the body 3; a sensor 5 that reads a mark on a rotating wheel 6 which is associated to the wheel 1 for determining the speed and the angular position of the wheel 1 and an Electronic Control Unit 8 to calculate with the phase correlation of the vertical acceleration output signal and the angular position of the wheel the mass and location of weight to correct the imbalance. The device further includes a means 8 for memorising the said mass and location of the correction weight and a screen display 15 integrated to the instrument panel of the vehicle for displaying to a user the said mass and location of the correction weight by a direct readout. Thus, the imbalance is directly measured on the vehicle.