my rear passenger tire is leaning! on 1994 Buick Park Avenue

my rear passenger tire is leaning ,and looking like its about to fall off what can be my issue?

2 answers
sounds like a failed bearing. Have towed to a shop for inspection and repair. If leans bad enough and you drive it, it may come apart.
The strut tower may have also failed. This is a somewhat common issue in the 'rust belt'. The area around the strut mount will rust through the body and cause a similiar condition.