Tank tracks movement

What is the easiest process for tank tracks movement?
Making the tank is no problem but in In 4.15 i am struggling to
Make anything move?

The “simplest” solution is a ribbon like skeletal mesh, which is skinned to a couple of bones representing position of the road-wheels. The movement of the treads/link along the path of the track is done using animating UV coordinates in material.
The other option is representing track path as a spline and placing instances of treads/links along the spline using Instanced Static Mesh component. I have example of later in MMT project:

Former was around too, but currently it’s missing BP logic which animates UVs in material.