Should a tire with tread worn beyond the wear bar still be used?

A tire with tread worn beyond the wear bar should not be used for several important safety reasons. The wear bar serves as a critical indicator of tire tread depth, which is essential for maintaining traction, handling, and overall vehicle stability. When the tread wears down past this indicator, the tire no longer has the necessary grip on the road, especially in wet or slippery conditions. This significantly increases the risk of hydroplaning and reduces the tire's effectiveness in dissipating water.

Additionally, insufficient tread depth can lead to longer stopping distances, compromising safety not just for the driver but for others on the road as well. Using worn tires may also lead to increased tire blowouts or failures, posing further risks during operations, particularly in a military context where reliability is crucial.

While maintaining proper air pressure is always important for tire performance, it does not substitute for having adequate tread depth. Overall, ensuring that tires are in good condition is vital for safe vehicle operation, making the decision to use a tire beyond the wear bar unwise.