Disc and drum brakes used only two types of friction materials—semimetallic and asbestos. The mechanic simply replaced the old pad or shoe ... from the Society of Automotive Engineers and ...

When it comes to maintenance items on your vehicle, one of the most important components you need to pay attention to ...

the brake pads are the friction material the caliper squeezes against the rotating disc, or rotor, to slow the wheel’s rotation and stop the car. In drum brakes, the pads are called shoes.

and collected the dust from four different but commonly used brake pad types. These were low-metallic brake pads, semimetallic brake pads with limited copper, non-asbestos organic pads ...

You can save hundreds of dollars by replacing the pads and rotors yourself. And it only requires a few cheap tools.

A major, but unregulated source is car brake wear ... of particulate matter on our lungs from four different types of brake pads with various chemical makeups: low metallic, semi-metallic ...