Which of the following is true regarding commercial vehicle front tires?

The assertion that no front tires can be re-grooved if the load capacity is high reflects the safety standards and regulations governing commercial vehicles. Front tires play a crucial role in maintaining vehicle control, especially in large vehicles that bear significant loads.

When a tire is re-grooved, it is modified to extend its life by cutting additional tread grooves into the tire. However, this process can compromise the tire's structural integrity and traction under high load conditions. If a tire's load capacity is already at a high threshold, re-grooving can increase the risk of tire failure, which poses a safety hazard not only to the vehicle but also to other road users.

Thus, the requirement that front tires of commercial vehicles be free from re-grooving when under high load capacity is designed to ensure adequate performance and safety. This policy emphasizes the importance of using tires that are appropriate for the specific load conditions, which is critical in maintaining operational safety for commercial vehicles.