It sounds crazy, but you almost have to be a racecar driver to drive in this city in Mexico. It's wild. You slam on the gas then hit the brakes very hard, everywhere you drive. People drive extremely aggressively, cutting in front, many time causing accidents (they're all over the place). I'm thinking their brakes get hotter than most people's as a result. It's out of this world. I used to drive little FSAE racecars in college and did a little autocross. It's comparable driving in this town but scary as hell. It's funny, I'm more scared of driving / riding in a car there than any cartel.
Oh and this town has HORRIBLE drainage. The streets turn to small rivers. People's cars wash away and they drowned all the time too. It's insane, you almost have to see it to believe it.
Yet the people are not poor there. The government just sucks and none of the public funds go back into infrastructure. They never invest in their roads or any of that stuff. It's pretty sad.
I think you maybe hit the nail on the head. Cheap bargain basement rotors. I may have them buy the nice BOSCH ones.