The E-50 Standardpanzer was intended as a standard heavy tank, replacing the Panther and Tiger II. The weight of these vehicles would fall between 50 and 75 tonnes. A conical spring system was proposed to replace the complex and costly dual torsion bar system. The Schmalturm would have been used, with a variant of the 88 mm L/71 gun. The Engine was an improved version of the Maybach HL230 developping 900 hp up to 1200 hp with supercharging. Maximum speed was to be of 60 km/h.