RE: It's a Tiger thing -- you wouldn't understand
Correct and accurate track teething is critical to proper running to avoid throwing a track.
Being a Tamiya owner the Tiger is one of the best for keeping its tracks on during rough driving. The tracks and sprocket are well engineered in the Tamiya kit such that aftermarket tracks sometimes get thrown if they are not truely accurate copies of the Tamiya tracks. In general the metal tracks do have more tendancy to throw over the plastic as the metal weight really out-proportions the plastic model wieght.
The high speed tracking of modern tanks requires different engineering than the slower WWII tanks where the track is supported and kept under continuous tension.