Abstract: There is disclosed herein a vehicle suspension system suitable for use with both driving and steering wheels comprising a pair of trailing arms pivotably connected at one end to a frame assembly and having the other ends thereof movably supported by the cooperative effort of air springs and a leaf spring extending transversely between the trailing arms. The leaf spring has a center portion secured to the frame assembly so as to provide lateral support to each of the trailing arms as well as to cooperate with the air springs in supporting the frame assembly and associated vehicle body.