As an automotive engine mechanic, I started my trade changing out brake pads. As far as im aware, the last generation of asbestos containing brake pads in the US were Ferodo Brake Pads ending around 1994. The pads were phased out for a number of reasons
- health, of course. as a mechanic, mesothelioma was your biggest risk changing brakes all day. most shops douse the pad assembly in a mix of dawn dish liquid or a basic degreaser liquid we called just called sauce, and send it through a quick carwash after the job. It was also an easy way to please customers and it kept friable dust to a minimum.
- performance. compared to euro/japanese brakes arriving in the states in the early nineties, companies like raybestos were at a serious risk of going bankrupt if they didnt change. My first set of ceramic/ceramide pads was a revelation. I recommended them to all my customers.
- health scares. Your consumer risk of driving a car with brakes impregnated with asbestos was minimal, but the CNN/60 minutes documentaries really did a number on the industry. It got so bad that at one point, Raybestos included big labels reading "CONTAINS NO ASBESTOS."
- quality. As manufacturing for ceramic or exotic carbon pads got better, they got cheaper. the only companies still cranking out asbestos had legacy factories in Mexico or Indonesia that could not re-tool. They were just cranking out cheap pads for fleet customers too lazy to change brands.
*update: checking with a buddy in the shop today It seems im wrong. Older Pierce brand firetrucks (pierce saber models she says) shipped with asbestos front and rear pads if they were not intended for airport duty.