What is the minimum tread depth for non-steering axles?

The minimum tread depth for non-steering axles is indeed 2/32". Maintaining an appropriate tread depth is crucial for ensuring effective traction, stability, and overall safety of the vehicle, particularly in adverse weather conditions. Non-steering axles, which do not directly control the steering of the vehicle, still play a vital role in supporting weight and maintaining control, especially during braking and turning maneuvers.

The 2/32" tread depth requirement is established because it provides a basic level of traction necessary for the vehicle's performance and safety. Lower tread depths can lead to reduced grip on the road, increasing the risk of skidding or hydroplaning, especially on wet surfaces. This tread depth ensures that there is sufficient rubber in contact with the road to maintain adequate traction while reducing the likelihood of tire failure.

In contrast, other tread depth options do not meet the regulatory standards for non-steering axles, making them insufficient for safe vehicle operation.