What is the minimum tire tread depth recommended for safe heavy trailer operation?

The recommended minimum tire tread depth for safe heavy trailer operation is indeed 4/32 of an inch. Maintaining this level of tread depth is crucial for ensuring proper traction, handling, and overall stability of the trailer, particularly under heavy loads or adverse weather conditions. Tires with sufficient tread depth help prevent hydroplaning on wet surfaces, reduce stopping distances, and enhance the ability to make controlled turns. Driving on tires that are worn below this threshold significantly increases the risk of tire failure, which can lead to accidents or loss of control of the vehicle. Therefore, regularly checking and ensuring that tires meet or exceed this minimum tread depth is an essential part of safe heavy trailer operation.