In this state, the brake pads are ready for replacement at around 2-3mm, which is critical wear. Increased distance in brakes, squeaking or grinding noises, and vibrations in the brake pedal are all signs of replacement. Early wear may be found upon regular examination during maintenance and frequent inspections. Ignoring brake pads that are worn can damage the brake discs or drums and safety. To maintain the optimal performance of the brakes, replacement must be done in a timely manner.