Brake pads are crucial safety components in an automobile's braking system. They are made up of steel, adhesive insulation layers, and friction materials. When you apply the brakes, the brake pads are pressed against the rotor (or drum) to slow your car down. This generates a lot of friction and heat, which wears down the brake pads over time. Therefore, it is important to replace your brake pads regularly to ensure your car's safety.