What is the legal minimum tread depth in most states?

The correct answer, which is a legal minimum tread depth of 2/32″, is significant because it reflects the threshold below which a tire is generally considered to be unsafe for driving. Tread depth is critical for maintaining traction and handling, especially in adverse weather conditions. When the tread wears down to this depth, the tire's ability to channel water away diminishes, increasing the risk of hydroplaning and impairing overall vehicle safety.

Many states adopt this standard to help ensure drivers maintain safe vehicles on the road. A minimum tread depth of 2/32″ is often viewed as a legal guideline that, while it may allow for short-term use, emphasizes the need for regular tire maintenance and replacement to promote road safety and prevent accidents.