What Causes the Car Body to Shake When Braking?
2 Answers
The reason the car body shakes when braking is due to uneven surfaces on the brake discs. When this occurs, the brake discs need to be replaced. A car's braking system consists of the master brake cylinder, vacuum booster, brake caliper, brake pads, and brake discs. When the brake pedal is pressed, the vacuum booster provides assistance, making it easier for the driver to depress the brake pedal. Braking refers to the action of stopping or reducing the speed of moving locomotives, vehicles, other transport 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, which generate braking torque under external force.
I've experienced the car body shaking when stepping on the brakes, feeling like the car is protesting. The most common reason is warped brake rotors, as uneven surfaces cause uneven friction and vibration during braking. My previous car had this issue - after several years of driving, the rotors developed wave-like wear patterns, but a mechanic's resurfacing fixed it. Uneven brake pad wear can also cause shaking, such as when one side is thicker than the other. Wheel balance issues shouldn't be overlooked either, as uneven tire pressure or deformed rims can lead to unstable driving. Suspension system problems, like aging shock absorbers, may also result in poor brake impact control. I recommend regularly checking brake rotor surface flatness and replacing pads promptly to avoid costly wheel hub deformation. Don't rush to cool hot rotors with water after driving, as this can cause warping. Safety first - spending a little on maintenance can prevent major troubles and make driving much more comfortable.
