What can be a consequence of excessive wear on brake drums?

Excessive wear on brake drums leads to a reduction in braking efficiency, which is a significant concern for vehicle safety. As the drum wears down, its interior diameter may increase, and the friction surface can become uneven. This results in decreased contact area between the brake shoes and the drum, diminishing the ability of the brake system to generate the necessary friction for effective stopping power. Furthermore, worn brake drums can lead to issues such as brake fade, increased stopping distances, and potential brake failure. Thus, maintaining the proper condition of brake drums is crucial for ensuring the overall effectiveness of the braking system.