Personal work
King Tiger (German WW2 heavy tank)

Total tris ~18 K
I have done it with 2 skins: summer/autumn and winter.
2 Textures: whole tank (2048x2048) and caterpillars (128x512), both use Diffuse, Spec and Normal

Rendered in Unreal Engine 3
And here are also some references that I used for the armor coating:

All media from non-commercial products on the site are copyright Volodymyr Derhachov unless stated otherwise. Commercial product copyrights belong to the respective owners.