The .zip file includes a .MAX file (complete with Vray materials and lighting) as well as a .3ds file.
Notes / Features (Applicable to .max file only):
-The treads and wheels are set up such that simply animating a number (Path deform %) will not only move the treads, but also rotate the wheels accordingly.
-The model is set up such that the wheels are the parent to which all children are linked.
Thank you for your interest.