A single-suspended-wheel-steering drive system connectable to a wheel group of a vehicle for agricultural use wherein the vehicle has motion means comprising transmission means, wherein the system comprises: - a wheel carrier for the wheel group; - a shock absorber group for the support and shock absorption of the wheel carrier, to which the wheel carrier is constrained in rotation around a steering axis (S-S); - a drive group suitable to transmit the motion induced by the vehicle's transmission means to the wheel group comprising: i) a drive shaft operatively connected to the vehicle's transmission means; ii) a rotation shaft for the rotation of the wheel group; iii) a constant velocity joint, housed on the wheel carrier, operatively connected to the drive shaft and the rotation shaft for the mutual transmission of rotary motion; wherein the constant velocity joint has a center of rotation (Cr) offset distally from said steering axis (S-S); wherein the single-suspended-wheel-steering drive system is characterized by the fact that the drive shaft has a coupling end operatively connected to the constant velocity joint and a sliding end operatively connected to the transmission means, wherein the drive group comprises a transmission member, connectable to the transmission means, to which the sliding end is operatively connected so as to be driven in rotation and supported in a predefined longitudinal sliding; wherein the transmission member comprises a bell-shaped element drivable in rotation by the transmission means, identifying a bell cavity housing the sliding end and a carriage element operatively connected with the sliding end and the bell-shaped element; wherein the sliding end is free to slide inside the bell-shaped element and translates longitudinally with respect to said bell-shaped element by means of the carriage element along a shock absorber stroke, as a function of the rotation of the wheel carrier. - a wheel carrier for the wheel group; - a shock absorber group for the support and shock absorption of the wheel carrier, to which the wheel carrier is constrained in rotation around a steering axis (S-S); - a drive group suitable to transmit the motion induced by the vehicle's transmission means to the wheel group comprising: i) a drive shaft operatively connected to the vehicle's transmission means; ii) a rotation shaft for the rotation of the wheel group; iii) a constant velocity joint, housed on the wheel carrier, operatively connected to the drive shaft and the rotation shaft for the mutual transmission of rotary motion; i) a drive shaft operatively connected to the vehicle's transmission means; ii) a rotation shaft for the rotation of the wheel group; iii) a constant velocity joint, housed on the wheel carrier, operatively connected to the drive shaft and the rotation shaft for the mutual transmission of rotary motion; wherein the constant velocity joint has a center of rotation (Cr) offset distally from said steering axis (S-S); wherein the single-suspended-wheel-steering drive system is characterized by the fact that the drive shaft has a coupling end operatively connected to the constant velocity joint and a sliding end operatively connected to the transmission means, wherein the drive group comprises a transmission member, connectable to the transmission means, to which the sliding end is operatively connected so as to be driven in rotation and supported in a predefined longitudinal sliding; wherein the transmission member comprises a bell-shaped element drivable in rotation by the transmission means, identifying a bell cavity housing the sliding end and a carriage element operatively connected with the sliding end and the bell-shaped element; wherein the sliding end is free to slide inside the bell-shaped element and translates longitudinally with respect to said bell-shaped element by means of the carriage element along a shock absorber stroke, as a function of the rotation of the wheel carrier.