What must be done if a tire fails during inspection due to metal-on-metal noise?

When a tire fails during inspection due to metal-on-metal noise, immediate action is necessary because this type of sound typically indicates severe wear or damage to the tire's internal components. Such conditions can compromise the tire's integrity, leading to a potential blowout or loss of control while driving, which poses a significant safety risk to the vehicle occupants and others on the road.

Replacing the tire immediately ensures that the vehicle can operate safely without the risk of further damage or accidents resulting from tire failure. It is crucial to prioritize safety in such situations, making a replacement the most prudent choice.

Other options, such as leaving the tire as it is, marking it for future inspection, or simply reporting it to the owner, may delay necessary action and increase the risk of a tire-related incident. Therefore, replacing the tire promptly is essential for maintaining the safety and performance of the vehicle.