Squealing Noise When Braking

3 Answers
StJeremiah
07/29/25 2:04am
Here are the specific reasons for sharp squealing noises when braking: 1. Improper brake pad installation: When installing new brake pads, the old brake disc was not resurfaced, resulting in a poor fit. A poor fit or installing new pads without resurfacing the old disc causes the new pads to directly rub against the uneven surface of the old disc, leading to uneven wear on the new pads. 2. Brake system malfunction: There may be a defect in the brake system itself, causing the brake pads to only partially contact the brake disc. This increases the pressure per unit area during braking, resulting in abnormal noises. It is recommended to inspect components such as the caliper and guide pins. 3. Presence of foreign objects: Foreign objects cause an uneven contact surface, leading to abnormal noises.
Was this review help?
15
4
Share
LeoDella
08/12/25 12:04pm
I've encountered the issue of screeching brakes several times, usually indicating the brake pads are nearly worn out or metal parts are grinding. I commute on mountain roads daily, and the brakes squealed every time I applied them. Upon inspection, I found the pad thickness was only 2mm. The metal indicators were scraping against the rotors – that sound is nature's warning not to delay. Worse yet, sometimes small stones or dust get trapped between pads and rotors, amplifying the noise. Last time I ignored this sound, it resulted in rotor damage too, doubling the repair bill. So I've learned my lesson: every 3,000 km I visually check pad condition or monitor sound changes while driving. Safe driving is crucial – if screeching persists, immediately reduce speed and head to a service point without taking risks, especially since wet roads increase accident likelihood. After parking, routinely check wheel hubs for metal dust – early pad replacement saves both hassle and money.
Was this review help?
13
2
Share
Expand All
VonZachary
10/02/25 3:33am
The screeching brake noise reminds me of my neighbor's shared experience, which could stem from three main causes: First, the brake pads are worn too thin, exposing the metal layer that causes friction; second, rust forms on the rotors after rain or prolonged parking, leading to squeaking when the pads make contact; third, foreign objects like sand have entered the system. Even new brake pads may produce slight noise after installation, but this usually disappears within a few weeks. I recommend checking the pad thickness promptly—if it's below 4mm, consider replacing them. Delaying could damage the rotors or even the entire brake caliper. For prevention, avoiding gravel roads and sudden braking can extend pad lifespan. Cleaning the wheel hubs during each car wash is highly effective, and safely removing small stones with a screwdriver yourself is much better. In short, don't wait for the noise to persist—have a professional take a look for peace of mind. Regular brake system maintenance saves money and ensures safety.
Was this review help?
2
2
Share
Expand All
More Forum Discussions

What does the lane change signal mean?

The lane change signal is one of the traffic police hand signals, indicating that vehicles should vacate the designated lane and slow down. The right arm is extended forward with the palm facing left; the right arm swings horizontally to the left. The new eight types of traffic police hand signals are: stop signal, go straight signal, left turn signal, left turn waiting signal, right turn signal, lane change and slow down signal, deceleration and slow down signal, and signal for vehicles to pull over. Additional information: 1. Deceleration and slow down: The right arm is extended forward to the right with the palm facing downward; the right arm and hand 2. Deceleration and slow down signal: The palm swings straight downward, and vehicles should slow down. 3. Signal to pull over: The left arm is extended forward and upward with the palm facing forward; the right arm is extended forward and downward with the palm facing left; the right arm swings horizontally to the left, and vehicles should pull over. 4. Assistance: When traffic police are on duty at night without streetlights, under poor lighting conditions, or during low visibility weather such as rain, snow, fog, dust, or hail, they can use a baton in their right hand to direct traffic according to the above hand signals.
7
1
Share

How Many Generations of Phantom Are There?

There are 7 generations of Rolls-Royce Phantom. Below is relevant information about the Rolls-Royce Phantom. Body Dimensions: The Rolls-Royce Phantom is classified as a full-size luxury car, with body dimensions of 5770mm in length, 2018mm in width, and 1648mm in height. It has a wheelbase of 3552mm and a curb weight of 2700kg. Configuration: The Rolls-Royce Phantom features a double-wishbone independent front suspension and a multi-link independent rear suspension. It is equipped with a 6.7L twin-turbocharged engine that delivers a maximum horsepower of 571PS, a maximum power output of 420kW, and a peak torque of 900Nm. The transmission is an 8-speed automatic gearbox.
17
0
Share

What is the turning radius for a 5-meter-long car?

A 5-meter-long car typically has a turning radius of around 6 meters. The turning radius, also known as the minimum turning radius, refers to the radius of the circular path traced by the center of the outermost steering wheel when the steering wheel is turned to its maximum position and the car is moving at the lowest stable speed. Impact of minimum turning radius on driving: It largely indicates the car's ability to navigate through narrow, curved areas or bypass insurmountable obstacles. A smaller turning radius means better maneuverability. To ensure that the wheels roll purely without slipping during turns, the minimum turning radius is determined by the vehicle's wheelbase. A longer wheelbase results in a larger turning radius, but vehicles with longer wheelbases generally offer better ride comfort. Factors affecting turning radius: The turning radius of a car is determined by factors such as the wheelbase, track width, and the maximum steering angle of the wheels. It should be carefully selected during design based on the vehicle type, purpose, road conditions, structural features, and dimensions like wheelbase. To ensure pure rolling of the wheels without slipping during turns, the minimum turning radius is determined by the vehicle's wheelbase. A longer wheelbase results in a larger turning radius, but vehicles with longer wheelbases generally offer better ride comfort.
10
4
Share

What Causes a Car to Fail to Start When Overheated?

Reasons why a car fails to start after overheating: 1. Excessive carbon deposits: Large amounts of carbon deposits can absorb gasoline, causing a short-term lean air-fuel mixture. 2. Fuel injector dripping: After the engine is turned off, poor sealing of the fuel injector leads to fuel soaking the cylinders, resulting in an overly rich air-fuel mixture, making it difficult to start. 3. Insufficient fuel pressure: Mainly caused by faults in the fuel pump or fuel pressure valve. 4. Faulty coolant temperature sensor and intake pressure sensor: These can send incorrect signals, leading to an overly rich or lean air-fuel mixture. 5. Faulty ignition coil: Changes in resistance can cause secondary voltage to drop too low, making it difficult to start. 6. Faulty oxygen sensor: Unable to correct excessive fuel injection, resulting in an overly rich air-fuel mixture.
19
3
Share

What is the symbol for high beam?

Generally, on the dashboard, the high beam symbol is blue with straight, non-tilted light projection lines; the low beam symbol is green with downward-tilted light projection lines. Precautions for using high beams: Normally, low beams are used more frequently. High beams should only be used under specific conditions. Because high beams emit parallel, concentrated, and bright light, they can cause glare and distraction for oncoming drivers, creating potential hazards. Conditions for using high beams: Two conditions must be met to use high beams. First, there should be no other lighting on the road; second, there should be no oncoming traffic. Only when both conditions are satisfied can high beams be used. High beams are typically used when driving on highways. In urban or city roads at night, low beams should be used.
3
2
Share

How Long After Vehicle Transfer Can It Be Transferred Again?

After the completion of a used car transfer, it generally takes 3 working days for the records to be archived. Once the license plate is obtained, the vehicle can be transferred again without any additional restrictions. It is important to note that before the vehicle transfer, any traffic violations or other issues must be resolved, and there should be no pending records such as unresolved traffic accidents. If the seller/buyer is a company, the original organization code certificate and the official seal are also required. Detailed process for vehicle transfer: Transaction documentation: Pay the used car transaction tax. Private accounts are charged 1%, while corporate accounts are charged 4%. Vehicle inspection: Drive the car to the inspection station for external inspection, tracing the vehicle number, removing the license plate, and taking photos. The vehicle photo is then attached to the inspection record form, and the archiving process is completed in the transfer hall. License plate selection: After obtaining a number from the dispenser, queue up with the relevant materials to pay the transfer fees. Transfer and relocation: Required materials include the motor vehicle registration, transfer, and cancellation form/transfer application form, inspection record form, original vehicle ownership certificate, original driving license, original owner's ID card, original license plate number, vehicle photo, and the transfer invoice from the trading market. Documents required from the original owner for a used car transfer include the registration certificate, driving license, and ID card. The buyer needs to provide an ID card, and if they are from another region, a residence permit or temporary residence certificate is required. Vehicle transfer first requires a vehicle evaluation. The evaluation fee is generally 1%-2% of the assessed vehicle value, and other fees include those for the license plate, driving license, etc. The original commercial insurance of the vehicle can be canceled (compulsory insurance cannot be canceled), or the insurance can be transferred to the buyer at the insurance company. Precautions for buying a used car: Incomplete documentation. Complete documentation for a used car includes the vehicle registration certificate (or original purchase invoice), driving license, vehicle purchase tax payment certificate, road maintenance fee documentation, and compulsory insurance. Missing documents such as the vehicle registration certificate or driving license, or unpaid compulsory insurance and road maintenance fees, can cause endless trouble for the buyer. Therefore, if the seller cannot provide complete documentation, the buyer should be particularly cautious. Tampering with the odometer. Most consumers rely on the odometer to judge the condition of the car, and sellers often take advantage of this by tampering with the odometer. In fact, the odometer is not just an indicator of usage intensity but also a recorder for the maintenance and replacement of other vehicle parts. If the buyer follows the tampered odometer for maintenance, it can lead to a series of potential safety hazards. New paint covering "external injuries." When purchasing a used car, if the car has been repainted and there are signs of repair around the front, rear, and A, B, C pillars, the car may have been involved in a major accident. "Tuning the heart" to raise the price. Many consumers focus too much on the car's "heart" (engine) and neglect the health of the car body. Used car sellers take advantage of this by replacing engine components to make the "heart" appear younger, thereby inflating the price.
2
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.