What is the minimum tread depth requirement for steering axle tires?

The minimum tread depth requirement for steering axle tires is indeed 4/32-inch. This standard is crucial because the steering axle plays a significant role in the vehicle's handling and stability. Adequate tread depth is necessary to maintain traction, especially in wet or slippery conditions, which directly affects a driver’s ability to control the vehicle. Insufficient tread depth can lead to increased stopping distances, reduced steering responsiveness, and a higher risk of hydroplaning.

The reason this specific measurement is mandated reflects the need for safety and performance in various driving conditions. While other tread depths listed may apply to different axle types or non-steering tires, the 4/32-inch requirement specifically addresses the unique demands of steering axle tires, ensuring that they can function effectively under normal operating conditions.