An adjustable suspension system includes a torsion spring, four Scott-Russell linkages for each wheel of the vehicle, and a worm gear for rotating the torsion spring. At least one of the Scott-Russell linkages for each wheel is responsive to the torsion spring to adjust the ride height of the vehicle while maintaining a substantially constant camber angle for the wheel. In one exemplary method for adjusting the ride height of a vehicle, a dynamic parameter of the vehicle is sensed and, based on the sensed dynamic parameter, the torsion spring is automatically rotated to change the orientation of the Scott-Russell linkages and thereby adjust the ride height of the vehicle. The dynamic parameter may be the speed of the vehicle, the pitch and body roll of the vehicle, or the lateral acceleration of the vehicle. The operation of automatically rotating the torsion spring may be controlled by a microprocessor.