What is the reason for the clunking sound when braking hard?

[VanLucy]

When braking hard and hearing a clunking sound, the reason is that the vehicle is in a critical state of intermittent rolling between braking and locking. When the ABS system is activated by hard braking, it produces a clunking sound, which is a normal phenomenon—simply press the brake pedal firmly to the end. Additionally, worn engine mounts can also cause car vibrations. Engine mounts are essentially the shock absorption system for the engine, responsible for absorbing minor vibrations during operation. If the engine mounts are faulty, these vibrations can transfer to the steering wheel and cabin, causing shaking at idle. When the car engine is idling and the electrical system is turned on, it can easily lead to vehicle vibrations as the engine load increases due to the electrical system being activated.