What are the minimum tire tread requirements on a combo truck for the rear tires?

The minimum tire tread requirement for the rear tires of a combination truck is established to ensure safe operation and optimal traction under various conditions. A depth of 2/32 inches meets the minimum legal requirement for tread on these vehicles. This depth helps to maintain adequate water displacement during wet conditions, reducing the risk of hydroplaning and providing better grip on the road surface.

Choosing a higher tread depth would indeed provide better performance and safety, particularly in adverse weather conditions, but the regulatory standard sets 2/32 inches as the minimum allowable tread depth for rear tires on combination trucks. This regulation is important for maintaining safety standards in commercial vehicle operations and ensuring that drivers are operating with tires that are legally compliant.