The term 'Like Bald Tires' is a metaphor for something that is WORN out and UNSAFE. The two crossword solutions for this term are UNSAFE (6 letters) and WORN (4 letters). This phrase is often used to describe something that is in a state of disrepair and is no longer safe to use. It can be applied to any object, from a car tire to a piece of furniture, that has been used for too long and is now in danger of breaking or causing harm.