What is the threshold for tire tread groove wear on trailers considered as failure?

The correct threshold for tire tread groove wear on trailers is indeed identified as less than 2/32 of an inch on any three locations. This criterion is critical because it ensures that the tires maintain sufficient tread depth for optimal traction and safety.

When assessing tire condition, inspectors focus on specific measurements as they directly impact vehicle handling, stability, and braking performance. A tread depth of less than 2/32 of an inch is significant because it indicates that the tire may be worn to the point where it cannot adequately channel water away from the road surface, increasing the risk of hydroplaning and compromising the overall safety of the trailer.

Setting the threshold at this level helps protect both the driver and other road users by promoting the use of adequately maintained tires. Additionally, it is common practice to check multiple locations around the tire, as wear can often be uneven, and this approach helps ensure a thorough safety inspection.