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Why does the car roll backward after braking?

2 Answers

VanElliott

07/24/25 10:34am

The reasons why a car rolls backward after braking are as follows: 1. Inertia: The inertia from braking causes the car to lurch forward, and since the front of the car, which is usually heavier due to the engine, compresses the front axle suspension springs more tightly. 2. Parking brake not engaged: The car is parked on an uphill slope without the parking brake engaged. Relevant information about the parking brake is as follows: 1. Working principle: The professional term for the parking brake is auxiliary brake, which operates differently from the main brake. It uses a steel cable connected to the rear brake shoes to apply braking force to the car. 2. Usage: A return spring is used in conjunction with the parking brake. When the parking brake is engaged, the spring is stretched; when the parking brake is released, the spring returns to its original length. With prolonged use, the spring may also undergo corresponding deformation.

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McAaron

08/11/25 5:39am

That time when I was driving, the car suddenly rolled backward after braking, which really scared me. This usually happens with manual transmission cars, and a faulty clutch system could be the main reason. For example, if the clutch disc slips or the release bearing gets stuck, the engine and transmission should separate when braking, but if they don't separate properly, the engine's power can still transfer to the wheels, causing the car to roll back. Additionally, when parking on a slope, if the handbrake isn't tightened properly, the car can also slide backward. Problems with the braking system itself, such as worn brake pads or leaking hydraulic lines, can also cause the brakes to fail, making the car move unexpectedly. If you encounter this situation, it's recommended to pull over immediately, check if the gear is engaged correctly, and visit a professional repair shop to inspect the clutch hydraulics. For regular maintenance, make sure to replace the clutch fluid periodically to avoid minor issues turning into major problems.

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