My hydraulic rim brakes on my tandem have no issues when wet. They have no issues going down a mountain pass and not functioning because of overheating. My touring bicycle has disk brakes and they do not live up to what they are hyped to be. On a motor vehicle the rotors are made thick enough to handle the heat. They are not made thick enough to handle the heat with a heavy laden touring bicycle coming down a windy mountain pass and having to slow down behind traffic.