Method for calibrating a drive system for an axle of a motor vehicle , wherein the drive system comprises at least one electric machine as the drive unit , a drive shaft driven by the drive unit , a first output shaft and a second output shaft , as well as a first clutch connecting the drive shaft to the first output shaft and a second clutch connecting the drive shaft to the second output shaft , and moreover a control unit to regulate the drive unit and the clutches as well as to determine rotational speeds of the drive shaft and the output shafts ; wherein the method involves at least the following steps: a) providing a first torque at the drive unit for a first operating point; b) determining a first actuating pressure for the first clutch , determining a second actuating pressure for the second clutch from a first characteristic diagram and applying the actuating pressures for the transmitting and apportioning of the first torque to the output shafts depending on the operating point; c) determining of a first actual differential rotational speed between the first rotational speed of the first output shaft and the drive shaft rotational speed of the drive shaft and a second actual differential rotational speed between the second rotational speed of the second output shaft and the drive shaft rotational speed of the drive shaft ; d) either: adjusting a first calibrated actuating pressure for the first clutch until a first target differential rotational speed is achieved and adjusting a second calibrated actuating pressure for the second clutch until a second target differential rotational speed is achieved, or adjusting a first calibrated torque at the drive unit until a first target differential rotational speed on the first clutch and a second target differential rotational speed on the second clutch is achieved; e) creating a second characteristic diagram taking into account the calibrated actuating pressures or the first calibrated torque at the drive unit , wherein either the higher value of the actuating pressures is at first changed or both actuating pressures are changed at the same time in a weighting dependent on their value. a) providing a first torque at the drive unit for a first operating point; b) determining a first actuating pressure for the first clutch , determining a second actuating pressure for the second clutch from a first characteristic diagram and applying the actuating pressures for the transmitting and apportioning of the first torque to the output shafts depending on the operating point; c) determining of a first actual differential rotational speed between the first rotational speed of the first output shaft and the drive shaft rotational speed of the drive shaft and a second actual differential rotational speed between the second rotational speed of the second output shaft and the drive shaft rotational speed of the drive shaft ; d) either: adjusting a first calibrated actuating pressure for the first clutch until a first target differential rotational speed is achieved and adjusting a second calibrated actuating pressure for the second clutch until a second target differential rotational speed is achieved, or adjusting a first calibrated torque at the drive unit until a first target differential rotational speed on the first clutch and a second target differential rotational speed on the second clutch is achieved; e) creating a second characteristic diagram taking into account the calibrated actuating pressures or the first calibrated torque at the drive unit , wherein either the higher value of the actuating pressures is at first changed or both actuating pressures are changed at the same time in a weighting dependent on their value. <EOS>