Why is the brake disc squeaking?

[GabrielFitz]

The causes of brake disc noise include: 1. Running-in period for new cars or newly replaced brake pads leading to brake noise: New cars or newly replaced brake pads have a running-in period during which some noise may occur. Typically, the noise will disappear after the car has been driven for a few hundred kilometers. 2. Normal activation signal of the ABS system: The noise caused by the activation of the ABS system is normal. 3. Severe wear of brake pads triggering an alarm: Severe wear of brake pads can also cause brake noise. Generally, brake pads have warning indicators. When the brake pads wear to their limit, the warning indicators will rub against the brake disc, producing a sharp sound. At this point, the brake pads should be replaced immediately to avoid accidents. 4. Foreign objects between the brake disc and brake pads: There may be small stones or a water film between the brake disc and brake pads, which can cause noise. You can press the brake pedal several times or remove the small stones.