Hydraulic disc brakes offer great advantages over mechanical disc brakes or rim brakes the low maintenance and care intensity. Mechanical brake cables corrode due to ingress of water and pollute over time, while the hydraulic system is protected from them by the closed circuit. The disadvantage is, however, that if it should ever come to a damage of the brake circuit, the repair can be complex. Be sure to consider this shortcoming when buying a disc brake system. On the way, a defect cannot be solved in the blink of an eye.