Wheel suspension system (10, 20, 30) for an at least slightly actively steerable rear wheel of a double-track vehicle, - the wheel suspension system (10, 20, 30) having a wheel support (2, 32) for receiving the wheel, a toe link and at least one further link (5, 6) for attaching the wheel support (2, 32) to the vehicle body, and an actuator device with at least one actuator for active steering of the wheel in a first active steering direction and in a second active steering direction, - the wheel support (2, 32) being configured in at least two pieces and having a first wheel support part (2A, 32A) and a second wheel support part (2B, 32B), - the first wheel support part (2A, 32A) being configured to receive the wheel, and it being possible for the second wheel support part (2B, 32B) to be connected to the vehicle body and to be steered in a non-active manner via at least one of the further links (5, 6), - it being possible, in a functional use state of the wheel suspension system (10, 20, 30) in a vehicle, for the first wheel support part (2A, 32A) and the second wheel support part (2B, 32B) to be moved relative to one another by means of the actuator device in such a way that an active, at least slight steering movement of the wheel can be brought about, and - the toe link being articulated on the wheel support side on the first wheel support part (2A, 32A), and at least one actuator of the actuator device being coupled to the first wheel support part (2A, 32A) via the toe link, at least one actuator of the actuator device being attached via the toe link to the first wheel support part (2A, 32A), - the first wheel support part and the second wheel support part being coupled mechanically to one another by means of two coupling devices (34, 37; 35, 36) which are set up to guide the first wheel support part and the second wheel support part in the vehicle transverse direction (y) in each case in opposite directions during active steering, a relative movement of the two wheel support parts (32A, 32B) with respect to one another bringing about a steering movement of the wheel about an active steering axis, the active steering axis lying in the vehicle longitudinal direction (x) between the two coupling devices (34, 37; 35, 36), - the two coupling devices (34, 37; 35, 36) having a slotted guide (34, 37; 35, 36) or being formed by way of a slotted guide (34, 37; 35, 36), which slotted guides (34, 37, 35, 36) are formed in each case by way of a slot guide pin (34, 35) and by way of slotted guide grooves (36, 37) of accordingly corresponding configuration, and the slotted guide grooves (36, 37) having a curved profile here, a curvature centre point lying in the vehicle longitudinal direction (x) in each case between the two slot guide pins (37, 36). - the wheel suspension system (10, 20, 30) having a wheel support (2, 32) for receiving the wheel, a toe link and at least one further link (5, 6) for attaching the wheel support (2, 32) to the vehicle body, and an actuator device with at least one actuator for active steering of the wheel in a first active steering direction and in a second active steering direction, - the wheel support (2, 32) being configured in at least two pieces and having a first wheel support part (2A, 32A) and a second wheel support part (2B, 32B), - the first wheel support part (2A, 32A) being configured to receive the wheel, and it being possible for the second wheel support part (2B, 32B) to be connected to the vehicle body and to be steered in a non-active manner via at least one of the further links (5, 6), - it being possible, in a functional use state of the wheel suspension system (10, 20, 30) in a vehicle, for the first wheel support part (2A, 32A) and the second wheel support part (2B, 32B) to be moved relative to one another by means of the actuator device in such a way that an active, at least slight steering movement of the wheel can be brought about, and - the toe link being articulated on the wheel support side on the first wheel support part (2A, 32A), and at least one actuator of the actuator device being coupled to the first wheel support part (2A, 32A) via the toe link, at least one actuator of the actuator device being attached via the toe link to the first wheel support part (2A, 32A), - the first wheel support part and the second wheel support part being coupled mechanically to one another by means of two coupling devices (34, 37; 35, 36) which are set up to guide the first wheel support part and the second wheel support part in the vehicle transverse direction (y) in each case in opposite directions during active steering, a relative movement of the two wheel support parts (32A, 32B) with respect to one another bringing about a steering movement of the wheel about an active steering axis, the active steering axis lying in the vehicle longitudinal direction (x) between the two coupling devices (34, 37; 35, 36), - the two coupling devices (34, 37; 35, 36) having a slotted guide (34, 37; 35, 36) or being formed by way of a slotted guide (34, 37; 35, 36), which slotted guides (34, 37, 35, 36) are formed in each case by way of a slot guide pin (34, 35) and by way of slotted guide grooves (36, 37) of accordingly corresponding configuration, and the slotted guide grooves (36, 37) having a curved profile here, a curvature centre point lying in the vehicle longitudinal direction (x) in each case between the two slot guide pins (37, 36).