How is brake heat dissipated?

Brake heat is primarily dissipated into the atmosphere via the brake drum. When the brakes are applied, friction is generated between the brake pads and the brake drum or rotor, which converts kinetic energy from the vehicle's motion into thermal energy, or heat. The brake components, including the drum, are designed to absorb this heat.

As the brake drum heats up, it transfers some of that heat to the surrounding air. The airflow generated while the vehicle is in motion contributes to cooling the brake drum. This heat dissipation is crucial because excessive heat can lead to brake fade, reduced braking efficiency, and potential damage to braking components. Effective heat dissipation is essential for maintaining safe braking performance, particularly during long descents or in stop-and-go traffic conditions.

The incorrect options do not accurately represent the primary method of heat dissipation for brakes. Tires, the vehicle's cooling system, and the cabin are not designed to absorb or dissipate brake heat effectively, making them unsuitable for managing the thermal load produced during braking.