Are BMWs the only cars that warp rotors?
No. In fact, due to non-asbestos pads being mandated by the government, all cars now use them. One reason that this wasn’t as much of a problem with American cars is that they would die long before the rotors warped. On my first E28, they warped after 130k miles. Another reason is that these other cars are designed to provide very soft rides, which usually means very heavy front suspensions, which masked out many vibrations until the vibrations were quite serious. Now, with CabForward designs and more nimble suspensions, I commonly hear about those new Chryslers warping rotors in only 25k miles of driving!