A vehicle rear suspension mechanism capable of producing a toe-in displacement under a side force, a brake force, an engine brake force and an engine drive force to obtain a stabilized steering property. The mechanism includes a suspension member connected with a vehicle body, a wheel hub supporting a rear wheel for rotation about a rotating axis, a connecting device for connecting the wheel hub with the suspension member. The connecting device includes a ball joint connecting the wheel hub to the suspension member pivotably about the joint center, a first resilient bush located between the wheel hub and the suspension member in one of quadrants defined in a rectangular coordinate having an origin on the rotatable axis of the rear wheel other than the quadrant wherein the ball joint is located, a second resilient bush located between the wheel hub and the suspension member in one of the quadrants other than the quadrants wherein the ball joint and the first resilient bush are located.