What Is the Minimum Tread Depth for Front Tires? Legal Limits
For a standard passenger vehicle in the United States, the minimum legal tread depth for front tires is generally 2/32 inch, or 1.6 mm, measured in the major grooves. Commercial vehicles under Federal Motor Carrier Safety Administration rules need at least 4/32 inch, or 3.2 mm, on steering-axle tires. For rain, snow, and highway safety, […]