Will There Be a Popping Sound When Starting with Rusty Brake Discs?
2 Answers
Starting with rusty brake discs can produce a popping sound. Brake systems include disc brakes, drum brakes, and air brakes. Disc brakes offer better heat dissipation compared to drum brakes, making them less prone to thermal fade during high-speed braking, thus providing superior high-speed braking performance. However, their braking effectiveness at low speeds with cold brakes is inferior to drum brakes. Light rust on the brake disc surface: If there is only light surface rust, it can typically be removed by applying the brakes multiple times while driving. No special treatment is required, as minor rust on the brake discs will naturally wear off during normal braking. Severe rust on the brake disc surface: If the rust is more severe, it may cause vibrations or shaking during braking, such as brake pad vibration, steering wheel vibration or shaking, or body tremors. In such cases, it is advisable to take the vehicle to a repair shop, remove the brake discs, and sand the rust off thoroughly. The brake pads should also be inspected for any abnormalities. After proper reinstallation, a road test should be conducted. The road test involves driving at a speed of 70 km/h on a flat road and performing multiple brake applications to ensure no abnormalities are present. Precautions for brake disc usage: To maintain brake discs, it is recommended to perform maintenance every two months to prevent severe rust development. If vibrations persist after sanding the brake discs, it indicates an uneven surface, which may require further polishing or, depending on the situation, replacement.
Yes, it's true that rust on brake discs can cause a popping or cracking sound when starting to move. I'm quite familiar with this issue as I've experienced it several times over my years of driving. This mainly happens after rainy days or prolonged parking when the metal disc surface rusts and oxidizes, causing the brake pads to stick to the disc. When you start moving, they suddenly separate, creating a tearing sound that resembles something breaking apart. Usually, after driving a short distance, the rust gets worn off and the noise disappears—it's not a major malfunction. However, if the sound persists or feels abnormal, you should check for brake pad wear or caliper issues to prevent potential risks. I usually try to park in dry areas and, after rainy days, lightly press the brakes a few times to warm them up and help remove rust before driving, which can reduce this problem. Regular maintenance is also crucial. Have a mechanic inspect the brake system every six months to ensure everything is in order and prevent minor issues from becoming major troubles. In short, unusual noises when starting are mostly caused by rust, and handling it properly is key.
