In what way do brake pads and rotors work together in a disc brake system?

In a disc brake system, brake pads and rotors interact primarily through the process of gripping and creating friction. When the driver applies the brakes, hydraulic pressure causes the brake pads to clamp down onto the rotors. This contact generates friction, which slows down the rotation of the wheels, ultimately bringing the vehicle to a stop.

The effectiveness of the braking system heavily relies on the quality of the friction material in the pads and the surface condition of the rotors. This frictional interaction is essential, as it is the primary mechanism for decelerating the vehicle, making the role of the pads in gripping the rotors a critical aspect of brake functionality.

In contrast, the other options do not accurately describe the relationship between the brake pads and rotors in a meaningful way. For instance, while hydraulic pressure is involved in activating the brake mechanism, the pads themselves do not create this pressure; that function is taken care of by the hydraulic brake system. Likewise, while cooling is an important factor in a braking system's performance, brake pads do not cool the rotors; rather, their main function is to provide the friction needed to halt motion. Additionally, brake pads do not serve as a seal; seals are typically found in hydraulic mechanisms to prevent