What Causes the Squeaking Noise When Releasing the Brake Pedal?

[MadelineDella]

Car brake squeaking when releasing the pedal may be caused by friction between brake pads and discs/drums, foreign objects between brake drums/discs and pads, or abnormal brake caliper operation. Below is detailed information about automotive brakes: 1. Overview: Braking, also known as deceleration, refers to the action of stopping or reducing the speed of moving locomotives, vehicles, and other transportation tools or machinery. The general principle involves fixing a wheel or disc on the machine's high-speed shaft and installing corresponding brake shoes, bands, or discs on the frame to generate braking torque under external force. 2. Brake Pads: Automotive brake pads (or brake linings) are friction materials fixed on rotating brake drums or discs. The friction linings/blocks withstand external pressure to create friction, thereby achieving vehicle deceleration.

[MacElliana]

I've been driving for over 20 years and have encountered the issue of noise when releasing the brakes several times, with the causes generally concentrated on a few common points. The most frequent is excessive wear of the brake pads or surface oxidation and rust, especially after the car has been parked for a long time or following rainy weather. Additionally, small stones or dust may get stuck on the brake discs, causing a squeaking sound when released. Another potential issue is loose or aging parts in the suspension system, which can produce a clicking sound when the load changes upon releasing the brakes. Although these problems seem minor, they relate to driving safety, and prolonged neglect may lead to greater wear on other components. I recommend regularly checking the thickness of the brake pads, typically every 20,000 to 30,000 kilometers; if temporary noise is noticed, lightly applying the brakes a few times before driving can help remove rust and may temporarily alleviate the issue.

[MacOlivia]

As a car enthusiast, I always pay close attention to various vehicle abnormalities. Brake squealing when releasing the pedal usually stems from issues with brake pads or rotors - such as excessively worn pads needing replacement, or grooved/damaged rotor surfaces causing harsh friction. Additionally, loose suspension components or wheel hub bearings can also produce clicking sounds when releasing the brakes. These minor faults, if left unaddressed, may escalate into brake failure risks - never take them lightly. Personally, I inspect tires and brake areas weekly to ensure no debris is lodged, and pay special attention to garage heating during winter to prevent metal components from frosting. I recommend developing regular maintenance habits, like basic inspections every six months, which not only extend brake system lifespan but also prevent roadside emergencies.

[LydiaAnn]

When I first started learning to drive, my old clunker often made strange noises when releasing the brakes. The instructor told me it was mostly due to worn brake pads or accumulated dust. Common causes in modern cars also include rusted brake discs or loose suspension components, especially after car washes or during rainy seasons. Ignoring these noises can accelerate part wear and may distract from driving, so it's best not to delay. For simple fixes, you can clean the dirt around the wheels yourself or lightly press the brakes before driving to warm them up and remove rust. Remember, safety first—address any issues as soon as they're noticed.