 The rear suspension was an orthodox double trailing arm and oil damper with coil springs, but the front suspension featured a double wishbone and mono damper, and substituted a torsion bar for a spring.This unique front suspension was rather difficult to set up, and had a short arm, which prevented it from taking powerful strokes.The front wheel on the 4WS series could only move in the opposite direction as the rear wheel, and turning wide curves was also difficult with this series.