What Causes the Brake to Shake?

[VeraRose]

The reasons for feeling brake shake when pressing the brake pedal are as follows: 1. The brake disc surface is uneven, with excessive radial runout. During braking, the brake pads intermittently contact the brake disc, causing fluctuating braking force and resulting in vehicle vibration, especially noticeable when lightly pressing the brake. 2. Significant deviation in wheel alignment data, particularly incorrect front wheel alignment angles or excessive toe-in. This makes the vehicle difficult to control during acceleration, with slight but noticeable discomfort while driving. 3. Tire pressure is either too high or too low. Overinflated tires cause more severe vibration at higher speeds, while underinflated tires lead to a floating sensation and pulling to one side. Specific tire-related causes of brake shake include: 1. Wheel rim deformation. When mounted on a deformed rim, the tire also deforms, leading to an uneven surface and unbalanced wheel dynamics, causing vibration while driving. 2. Abnormal tire wear. Due to incorrect wheel alignment or rim deformation, the tire surface wears unevenly, resulting in vehicle vibration during driving.

[MacThomas]

Recently, I've been feeling a shaking sensation when braking, with both the steering wheel and pedals vibrating, which feels quite unsafe. It might be due to uneven brake rotors caused by frequent braking leading to warping, or possibly wheel hub deformation affecting the entire braking system. Sometimes, improperly installed brake pads can cause uneven wear, with one side wearing more than the other. This is more noticeable at high speeds, causing the car to shake. I later visited a repair shop, and the mechanic suggested resurfacing the brake rotors or replacing some parts. Early inspection and repair are crucial to avoid brake failure and potential accidents, ensuring safer daily driving.

[DeGenesis]

As a car enthusiast, when I encounter brake shudder, I immediately think of braking issues. The most common cause is warped disc brakes, where uneven friction during braking creates shudder; loose wheel bearings or out-of-round hubs can also contribute; unevenly worn brake pads are another culprit. It's more likely to occur in hot weather. I recommend checking brake system thickness and tire balance, and performing regular maintenance like cleaning calipers to prevent it. Don't underestimate this shudder—it could lead to longer braking distances and doubled danger.

[Octavian]

Brake shaking indicates a potential brake system malfunction that requires immediate attention. Possible causes include warped brake rotors, misaligned wheel axles, oil-contaminated brake pads, or excessive wear. This directly leads to unstable braking and poses high risks during high-speed turns. If you notice any abnormalities, don't hesitate—pull over immediately to inspect or head straight to a repair shop. Safety should always come first, as negligence may lead to irreversible consequences.