Torque Shop: Hissing noise when using the brakes is not normal and should be rectified immediately

A hissing sound when braking indicates a vacuum leak in your car's brake system, requiring immediate inspection and repair to ...
Jalopnik

4 Brake Problems You Can Diagnose Just By Listening

Brakes are an important component of your car, as they allow you to stop safely and in time. However, brake components wear over time, especially brake pads in the case of disc brakes and brake shoes ...