An arrangement for determining a maximum allowable torque at a driving wheel of an electric motor vehicle, wherein maximum allowable torque defines the maximum torque that can be applied to a road surface by a driving wheel before the torque at the driving wheel starts to decrease with increasing wheel slip of the driving wheel, the arrangement comprising two or more driving wheels, rotational speed detection sensors for each driving wheel, a computational unit configured to adjust output torque at each driving wheel, wherein the driving wheels are each driven individually by electric motors each configured to be operated separately by an inverter controlling torque output of the motor, and wherein the computational unit is configured to trigger a transient change in the drive torque at at least one driving wheel, and wherein rotational speed parameters are determined in said at least one driving wheel, characterized in that said electric motors are direct drive motors, without implementation of gearing and transmission elements, wherein said rotation speed detection sensors are designed to detect rotational differences of equal or less than 1 degree for each driving wheel, and wherein said rotational differences are further evaluated by said computational unit to determine tire slip ratio (s) defined by the ratio of the resulting rotation speed of wheel change (v w - v s) during the transient change of torque and the baseline rotation speed (v s) of the same driving wheel when the vehicle is at constant or at nearly constant speed, wherein the computational unit is configured to transiently apply several differing torque changes to the same driving wheel in a short sequence within the total time of 0.5 seconds, more preferably less than 0.1 seconds, said differing transient torque changes comprising a cycle in order to obtain several measurement points of slip ratios in dependence of the magnitude of transient torque changes and to determine from said measurement points a slip curve for the current driving conditions, said slip curve being the basis to determine at its peak the maximum allowable torque, which is further defined as the torque at which the maximum of the driving force delivered to the road surface is achieved, where maximum acceleration or deceleration force is applied to the vehicle. two or more driving wheels, rotational speed detection sensors for each driving wheel, a computational unit configured to adjust output torque at each driving wheel, wherein the driving wheels are each driven individually by electric motors each configured to be operated separately by an inverter controlling torque output of the motor, and wherein the computational unit is configured to trigger a transient change in the drive torque at at least one driving wheel, and wherein rotational speed parameters are determined in said at least one driving wheel, characterized in that said electric motors are direct drive motors, without implementation of gearing and transmission elements, wherein said rotation speed detection sensors are designed to detect rotational differences of equal or less than 1 degree for each driving wheel, and wherein said rotational differences are further evaluated by said computational unit to determine tire slip ratio (s) defined by the ratio of the resulting rotation speed of wheel change (v w - v s) during the transient change of torque and the baseline rotation speed (v s) of the same driving wheel when the vehicle is at constant or at nearly constant speed, wherein the computational unit is configured to transiently apply several differing torque changes to the same driving wheel in a short sequence within the total time of 0.5 seconds, more preferably less than 0.1 seconds, said differing transient torque changes comprising a cycle in order to obtain several measurement points of slip ratios in dependence of the magnitude of transient torque changes and to determine from said measurement points a slip curve for the current driving conditions, said slip curve being the basis to determine at its peak the maximum allowable torque, which is further defined as the torque at which the maximum of the driving force delivered to the road surface is achieved, where maximum acceleration or deceleration force is applied to the vehicle.