Slip Control is a common topic on high performance race cars vehicle dynamics. With respect to common passengers cars, in this particular application, the main goal is focused on the vehicle dynamic performances improvement. This can be achieved enhancing the vehicle control system capability to properly deliver the right amount of torque to the tires in every working condition. The subject of this analysis is the Formula Student Squadra Corse PoliTO 4-Wheel-Drive electric race car Slip Controller. The prototype is embedded with 4 independently controlled electric motors, which drive one wheel each, giving very high flexibility to the torque delivery. Due to the non-linearity of the tire contact patch interaction with the ground, a proper Controller should be implemented.