There is an automatic brake, so that the braking system can use lower oil pressure, or use a smaller diameter than the brake disc a lot of brake drum.
The hand brake mechanism is easy to install. Some rear wheels mounted disc brakes, which will install the drum brakes on the center part of the brake disc.
The machining and composition of parts are simpler, and there are cheaper manufacturing costs.
Drum brake brake drum in the heat after the diameter will increase, and caused by stepping down the brake pedal to increase, prone to brake response than expected. Therefore, when driving the vehicle with drum brake, avoid the hot recession caused by the brake pad due to high temperature.
Brake system response slower, brake pedal more difficult to control, is not conducive to high-frequency brake action.
The construction of complex parts, brake clearance must be adjusted to make maintenance difficult.