So this isn't the first time this has happened. I was driving down a long hill and my brakes started pulsing. I should note I do not ride my brakes. I use smooth occasional brakes. The further I got down the hill the worse the pulsing got and the less effective they were. It got to the point where I was concerned I would not be able to stop. At the bottom of the hill I pulled into a gas station and let the car sit for a little bit. I didn't drive much after that but as someone that drives a lot of hills I'm concern.
Could this just be overheating of the brake pads/rotors/drums? Or is this a sign of a warped rotor although there isn't a noticeable issue through normal driving?