This is the result of a wheel with 2 wheel nuts missing:
[IMG]http://i8.photobucket.com/albums/a4/motforum/dangerous/PC140024.jpg[/IMG]
[IMG]http://i8.photobucket.com/albums/a4/motforum/dangerous/PC140026.jpg[/IMG]
This is a wheel that was driven with loose nuts:
[IMG]http://i8.photobucket.com/albums/a4/motforum/dangerous/DSC00104.jpg[/IMG]