Vehicle disappearing when turning

Ah, no the .mb file would not do you any good

Here is the .fbx file on the vehicle I am using: Dropbox - hull.fbx - Simplify your life
Here is the project files: Dropbox - testv.rar - Simplify your life

In the project, you have to open “tank_level” in the folder “tank”. That is where I have all blueprints etc.