After you destory the MBT52, and it exploded, it should be turn to those wreck-like models, however it still have its original model, beside an added fire effect.
Also after the fire is ceased, you could pass through those "wreck" without any blocking element. {F22860}
Related issue of MBT52:
Coaxial gun incorrect zeroing
http://feedback.arma3.com/view.php?id=16375
Cannon overpower/incorrect zeroing
http://feedback.arma3.com/view.php?id=16376
Looks better than the weird black texture, I think. Maybe the destroyed texture needs a randomized alpha map so the underlying paint remains visible on parts of the wreck?
The fact is that model doesn't have any damage trail on it, and after it burned out, player could walk through them.