What causes shaking and vibration when stepping on the car brakes?

[MacEmmanuel]

Reasons for shaking and vibration when stepping on the car brakes: 1. Problems with the brake pads and brake discs; 2. Severe unilateral wear of the brake disc; 3. Poor return of the brake pump. Compared to brake pads, brake discs wear out more slowly, and repair shops generally recommend replacing brake pads and brake fluid. After a certain period of use, brake discs may wear out, leading to uneven surfaces or thickness that does not meet standards, which can severely affect braking performance over time. Braking, also known as deceleration, refers to the action of stopping or reducing the speed of running locomotives, vehicles, and other transportation tools or machinery. The general principle of braking involves fixing a wheel or disc on the high-speed shaft of the machine and installing corresponding brake shoes, bands, or discs on the machine base to generate braking torque under external force.

[OAlice]

Brake pedal shaking is mostly caused by issues with the brake discs or brake pads. A common scenario is brake disc deformation due to overheating—for example, after aggressive driving followed by emergency braking, which leads to excessive temperature and uneven cooling, resulting in an uneven surface that causes vibrations. Uneven wear of brake pads or contamination with oil and dust can also cause shaking, especially after prolonged frequent braking in urban traffic congestion. Another possibility is loose components in the suspension system, such as faulty bearings or shock absorbers, which can affect the entire braking system. If this happens, it's best not to delay—take the car to a professional repair shop immediately for inspection and repair. After all, brakes are critical for safe driving, and a small issue can escalate into a major problem. From my driving experience, regular brake system inspections can effectively prevent such issues and keep the vehicle in good condition.

[DiLeilani]

Brake shudder is no small matter. When you feel the vehicle is unstable, immediately slow down and stop in a safe place to check. The cause is often uneven brake disc surfaces or rust, especially when the car isn't dried thoroughly after washing. Worn brake pads or oil contamination can also cause vibrations, particularly noticeable during hard braking. Uneven tire pressure or wheel balance issues may sometimes contribute, causing the entire body to shake. Don't forget to check if the brake calipers are stuck or not flexible enough, leading to uneven friction. It's recommended to have a professional inspect it with proper tools as soon as possible - avoid DIY attempts to prevent mishandling. Safety first - remember to pull over first when abnormalities occur while driving.

[ORowan]

The first time I experienced brake shudder, I panicked and thought it was an engine malfunction, only to later realize it might be a brake disc issue. In normal driving, brake pads that are too thin or contaminated with grease and dust can cause slipping and vibrations, which are often exacerbated in rainy or humid conditions. Sometimes, the ABS system's normal operation can also cause slight shuddering, but this is normal and nothing to worry about. A simple self-check involves crouching down to inspect the tires and brake discs for obvious signs of wear. If you hear unusual noises, it's usually a clear sign that repairs are needed. A visit to the repair shop can typically resolve the issue quickly with new parts, which are not expensive but crucial. Over time, I've learned not to overlook such problems and to address them promptly for safety.

[Aaliyah]

If you enjoy DIY inspections, brake vibration can be checked from several simple points. First, examine whether the brake disc surface is smooth and free from scratches or thick rust spots that may cause wobbling during rotation. Check the brake pad thickness – if it's too thin, it's time for replacement, or clean off any dirt to maintain cleanliness. Loose wheel nuts can also cause vehicle-wide shaking, so tighten and secure them. Additionally, ensure the brake fluid level is adequate with no leaks to prevent hydraulic pressure transmission issues. These tasks can be done at home with a wrench and jack, but for safety, test at low speeds before driving. If problems persist, professional evaluation is recommended to avoid hidden risks.