问：从前乘客的后轮井嘎嘎

像您所描述的那样的爆炸声可能是由于轮胎缺陷引起的，例如轮胎上的平坦点。如果您有特定的缺陷，那通常意味着支柱不好。在闲置的噪音时，当汽车不移动时，发动机，变速器（扭矩转换器甚至在空闲时运行）和/或附件驱动器。If the sound occurs when the car is stationary, if the sound is not really obvious (pinpointed) on the mechanic’s initial inspection, a quick diagnostic can be performed by simply taking all of the belt driven accessories out of the picture by disconnecting the drive belts and then very briefly running the engine. If the sound disappears, the faulty component is then isolated amongst the accessories and pulleys. If the sounds does not disappear, that means the noise originates within the engine and/or transmission. If the thumping sound occurs only once the car is moving, remote wireless microphones can be used to identify the wheel position that the noise originates from and at which there could be a tire issue. If you want these steps performed by a certified Mechanic, dispatched by万博体育入口到您的位置，请要求车辆噪声诊断响应认证的机械师将为您解决这一问题。如果您有其他疑问或疑虑，请随时重新接触万博体育入口因为我们一直在这里为您提供帮助。