What is one way to identify worn brake pads?

Identifying worn brake pads is crucial for vehicle safety. One of the most common indicators of worn brake pads is the high-pitched squeak that occurs when braking. This sound typically arises from a wear indicator built into the brake pad, designed to alert drivers that the pads have worn down to a level that requires replacement.

When the brake pad material wears thin, the wear indicator, which is often a small metal tab, makes contact with the brake rotor. This contact creates a high-pitched noise that serves as a warning signal to the driver. Addressing this issue promptly is essential to prevent further damage to the braking system and maintain safe braking performance.

The other options may relate to various brake system issues but do not serve as reliable indicators of pad wear. A burning smell could indicate overheated brake components or other issues, while an increase in vehicle speed generally does not relate to brake pad condition. A hissing sound could potentially be associated with brake line problems or air in the system, rather than worn pads. Therefore, the high-pitched squeak stands out as a direct and clear sign of worn brake pads.