How would you guys do this?

[Steve Pankow]

Not sure. You can take a spline primitive, create a border and along with the border begin/end and offset controls, make one “link” of the tread run around the shape. I guess you’d have to create a new track for each one space them all out and then move them around to do an entire bulldozer tread. These links can be extruded, but AFAIK they tend to distort and break up when they go around the rounded corners of the bulldozer tread shape.