ASE Brakes Certification Practice Exam 2025 – Complete Study Resource

Disc brakes are designed primarily around the use of rotor discs. This type of brake system features a caliper that houses brake pads on either side of the rotor. When the brake pedal is applied, hydraulic pressure pushes the brake pads against the rotor, creating friction that slows down or stops the vehicle.

The characteristics of disc brakes contribute to their efficiency in heat dissipation, making them less prone to brake fade compared to drum brakes, especially under heavy loads or repeated use. This design makes disc brakes a common choice for many modern vehicles, particularly in performance and high-speed applications.

In contrast, other types of brake systems have different structural components. Drum brakes operate using a drum that rotates with the wheel and brake shoes that expand against the inside of the drum, while hybrid and electronically controlled brake systems may incorporate various technologies but are not defined by the exclusive use of rotor discs.