Abstract: A three-wheeled vehicle steering and suspension system including two support assemblies for two opposed front wheels pivotably mounted at opposite sides of the vehicle frame and operatively connected by a hydraulic cylinder arrangement actuated by the vehicle steering linkage for inducing opposed pivotal movement of the support assemblies during vehicle turning to cause leaning of the vehicle in the direction of turning. A biasing arrangement provides the operative connection between the hydraulic cylinder and the support assemblies for transmitting lean-actuating reciprocatory movement of the hydraulic cylinder to the support assemblies while yieldably permitting independent pivotal movements thereof.