PURPOSE: To improve comfortableness and control stability of a vehicle in the case of rear suspension with its trailing arm constructed by a leaf spring.

CONSTITUTION: A rear suspension consists of an axle beam 10 by which wheels are rotatably supported at both end, and mutualy integrated upper arms 16R, 16L and lower arms 18R, 18L which are made of elastic material and R side arms are isolated from L side arms respectively across the width of a vehicle. The upper arms have their front ends integrally connected to the front ends of the lower arms and their rear ends fixed to a vehicle body via buffer members 20R, 20L. The lower arm have their front ends pivotally supported to the vehicle body via rubber bushings 24R, 24L and their rear ends fixed to the axle beam.