Disc brakes are characterized by power. They have a greater pressure that works well in water. The friction created by the internal mechanisms makes the boat trailer stop faster and has greater resistance to the water. The problem with this is that they may not be suitable for salt water. Because they are made of metal, they are prone to corrosion if not washed right away with tap or freshwater. Pacific Trailers avoids this issue by using aluminum calipers, stainless steel pistons and dacromet backing plates on the brake pads. These are recommended for the boater wanting more control of the trailer’s stopping ability. Additionally, these work best for those towing through various terrain. Your brakes are only used when you depress your truck brake pedal. more