The SdKfz 285 (Sonderkraftfahrzeug 285, or special purpose vehicle 285) was a (fictional) eight-wheeled heavy armoured car used by the German Army in the Second World War
About this creation
The combat experience of the existing 8-wheeled armored cars during the German invasion of Russia, indicated some deficiencies in the current designs of armored cars. Therefore, in August 1943 an improvement program was started, based on a new set of requirements learned from these combat experiences. The result was the SdKfz 285 "Schildkröte" Panzerspähwagen, an upgrade and improvement on the SdKfz 234.
The original SdKfz 285s experienced difficulty in taking on fortified positions. Its original 5cm PaK 38 gun was not powerful enough to penetrate more then 21cm of concrete or the the armor of the Russian T-34s and KV-1s. Therefore a new varient was developed, the SdKfz 285/2. This version mounted a much larger 8cm PAW 600 anti-tank/anti-structure gun. This new gun had a range of 6200m and could penetrate an excess of 140mm of vertical steel armor. This new gun proved to be extremely capable and was able to take out Sherman tanks during fighting for the Persian oil fields in 1945.
In 1946, armor was upgraded as well. The frontal armor increased from 30mm to 56mm, while the turret armor increased to 80mm. The armor between the wheels was relatively thin so inexpensive rubber skirts were developed to dissipate incoming round's energy.
A large 18000cc Tatra 105 V12 diesel engine was installed in all models of the SdKfz 285, allowing for a range of 1200km and speeds up to 94km/h on paved surfaces. For fighting in the deserts of Persia and Palestine a rear mounted detachable fuel canister was made equippable to provided the vehicle with extra range.