see top parent comment, its nowhere near as simple as weight adds dust, and hasn't been since brake pad tech changed about 20 years ago https://en.wikipedia.or

see top parent comment, its nowhere near as simple as weight adds dust, and hasn't been since brake pad tech changed about 20 years ago https://en.wikipedia.org/wiki/Brake_pad#Materials https://en.wikipedia.org/wiki/Brake_pad#Materials