What is the minimum tread depth on any portion of the traction surface for a vehicle to be considered safe?

The minimum tread depth of 1.6 millimeters is crucial for ensuring a vehicle is safe for operation. This depth is important because it allows for adequate water displacement, reducing the risk of hydroplaning on wet surfaces. Tread depth is directly correlated with a vehicle's ability to maintain traction, which is essential for safe acceleration, braking, and cornering. If the tread is worn below this threshold, the performance and safety of the vehicle can significantly degrade, leading to increased stopping distances and compromised handling capabilities. Therefore, maintaining a minimum tread depth of 1.6 millimeters is a standard safety requirement that helps mitigate risk during driving conditions.