1. Grinding Sound When Braking
Like we stated above, if you're experiencing a grinding noise while you're applying pressure to the brake pedal, your brake pads need to be replaced ASAP.
2. Vibration When Braking
Vibration when you apply the brakes is another sign that your vehicle's braking system is in need of professional help.
3. Taking Longer To Stop
Another major sign that your brakes need to be checked out is loss of performance when applying the brakes.
4. Brake Pad Indicator Light Comes On
Most modern vehicles come with brake warning lights that appear on your dash. One is your Antilock Braking System (ABS) light and the other is your brake system warning light.