A suspension assembly for a wheeled conveyance comprises suspension arms (1, 3) pivotally mounted on a chassis and extending in forward and rearward directions in the region of opposite sides of the chassis, each suspension arm (1, 3) having wheel receiving means (33) at the free end thereof. Spring means (7) is disposed in the region of each side of the chassis and acts between the forwardly and rearwardly extending suspension arms (1, 3) in such a way that the free ends thereof tend to pivot towards each other. Means (5) is provided for limiting movement of the suspension arms (1, 3) relative to each other. The limiting means (5) comprises a pair of limiter plates (17, 19) mounted on the chassis in opposite side regions thereof. The upper and lower suspension arms (1, 3) are pivotably mounted to the limiter plates in a region thereof remote from the spring means (7), the limiter plates (17, 19) restricting lateral movement of the suspension arms.