The chassis had originally been designed with a six - wheeled Schachtellaufwerk interleaved - roadwheel suspension ( as German half - tracks had already adopted ) .
The German Army amended this to a torsion bar system .
The chassis had originally been designed with a six - wheeled Schachtellaufwerk interleaved - roadwheel suspension ( as German half - tracks had already adopted ) , but the German Army amended this to a torsion bar system .