Abstract: An axle supporting member for a rear wheel is suspended to a suspension member by an upper link system which includes an A-arm and a side rod. The forward lower link member and the side rod are respectively arranged in front and rear of a vertical plane passing through a rotary axis of the rear wheel, while a suspension spring and a shock absorber are seated on the forward lower link member positioned in front of the above-mentioned vertical plane with respect to the longitudinal direction of the vehicle. Accordingly, an initial load transmitted from the suspension spring is mainly borne by the front end part of the suspension member, so that an initial load exerted to the rear end part of the suspension member becomes smaller. Thereby, it is possible to reduce the resilient deformation of bushings in the front and rear parts of the suspension member upon application of a wind-up input force.