These genuine BREMBO wear indicators are designed to alert you when your brake pads are nearing the end of their service life. Proper functioning of these indicators is crucial for maintaining safe and effective braking. When the brake pad material wears down to a specific point, the indicator will make contact with the brake disc, producing an audible squealing sound. This sound serves as a clear warning that your brake pads need to be inspected and likely replaced soon. Replacing worn brake pads promptly, based on the indicator's warning, helps prevent further damage to your brake discs and ensures your vehicle's braking system remains in optimal condition. Trust BREMBO for reliable wear indication.