Inspecting tire tread depth with a coin is a simple yet effective method to assess tire wear and determine if it’s time for replacement. Tire tread provides essential grip and traction, especially on wet or slippery roads. Insufficient tread depth compromises vehicle stability, handling, and braking performance, potentially leading to accidents and endangering lives.
The legal minimum tread depth varies across regions, but generally falls between 1.6mm (0.06 inches) and 3.2mm (0.13 inches). Using a coin can provide a quick and easy way to estimate tread depth. Simply insert a coin (typically a penny or a similar-sized coin) upside down into a tread groove. If the tread fails to cover the coin’s top, it may indicate that the tire has reached or is close to the legal limit and should be replaced.