Brake discs are widely used because they provide stable braking force, while effectively reducing the surface temperature.
Brake discs come in two types - ventilated and solid. The ventilated type is mainly used in the front wheels of cars , because of their superior heat dissipation compared to the solid type. Superbly machined, drilled discs provide reliable performance, especially under severe conditions, suchas racing, due to the increased cooling of the brake disc.
Brake drums provide greater braking force than that of brake discs. The heat dissipation, on the other hand, is less efficient. Brake drums are mainly used in the rear wheels of cars.