How is heat dissipated when braking?

Heat dissipation during braking occurs primarily through the brake drums or rotors. When the brakes are applied, the braking system generates friction, which converts kinetic energy into thermal energy. This thermal energy increases the temperature of the brake components, particularly the drums or rotors, as they are directly involved in the braking process.

The design of brake drums and rotors often includes features to enhance heat dissipation, such as ventilation holes or fins, which help to increase air circulation around the components and allow heat to escape more effectively. Keeping brake components cool is crucial for maintaining their effectiveness and preventing brake fade, which can occur if they overheat.

While tires do experience heat buildup due to friction with the road, they are not the primary components through which heat from braking is dissipated. Sound generated during braking is a byproduct of the friction process but does not play a role in heat loss. The exhaust system is unrelated to the braking process and does not contribute to heat dissipation from the brakes.