How can you know when you need a brake service or brake repair?
The brake pedal can be depressed nearly to the floor.
You hear a squealing or other unusual noise when you apply the brakes. Some brands of brake pads have a built-in device that produces a high-pitched squeal when the brake pads need replacing.
The vehicle pulls to one side when you apply the brakes.
You feel a grinding or bumpy sensation as you come to a stop.
In general, if there is something about your brakes that is making you uncomfortable, you should have them inspected.