Why does the brake squeak when lightly pressed at low speed?
1 Answers
It is normal for the brake to squeak when lightly pressed at low speed. The brake noise is partly due to excessive clearance in the brake pads, and partly because the brake disc has uneven hardness, leading to an uneven surface on the brake pads. The slower and lighter the brake is released, the more noticeable this sound becomes. This is because, for automatic transmission vehicles, as long as the gear lever is not in the parking position P or neutral N, the engine has power output, even at idle. To stop the car, the brake pedal must be pressed. When starting, the engine's power output is already applied to the wheels, but the wheels do not move because the braking force is greater than the power. If the braking force is less than the power, the wheels will move. When the brake pedal is released, and the power and braking force are at a critical point, the friction between the brake pads and the brake disc will produce a sound. If the brake pedal is released quickly (when conditions permit), there will be no sound. Don't worry; even Mercedes and BMW have this phenomenon, which is normal.