Tiger E German heavy tank

While the Tiger I has been called an outstanding design for its time,[13] it has also been called overengineered,[14] using expensive materials and labour-intensive production methods. In the early period, the Tiger was prone to certain types of track failures and breakdowns. It was expensive to maintain, but generally mechanically reliable.[15] It was difficult to transport and vulnerable to immobilisation when mud, ice, and snow froze between its overlapping and interleaved Schachtellaufwerk-pattern road wheels, often jamming them solid.