What is the minimum tread depth for safe tires?

• A. At least 2/32 of an inch; replace tires when tread is worn.
• B. At least 4/32 of an inch
• C. At least 1/32 of an inch
• D. At least 6/32 of an inch

Answer: (A)

Tread depth shows how much rubber is left to grip the road and clear water. When it wears down to 2/32 of an inch, there isn’t enough depth to channel water effectively, which raises the risk of hydroplaning and longer stopping distances on wet roads. That threshold is treated as the minimum safe depth in many places, so tires should be replaced once they reach this level. Deeper tread, like 4/32 or 6/32, offers more grip but isn’t the minimum required. A depth of 1/32 inch is already far too worn and unsafe. So, the minimum safe tread depth is 2/32 inch.