If the drive train is not working properly, extra power is required to stop the car, and that means replacing the brake shoes frequently. The drive train of a car controls the wheels of the car. The drive train is made up of the engine, the transmission and the wheels. The drive train controls the torque of the wheels and tells them how fast to rotate and in which direction. That means a problem in the drive train of your car will immediately reflect as a sluggish car that does not respond well at high speeds. You will need to use your brakes more frequently. This means more wear and tear on them.
For more info, see How to Change Rear Brake Shoes