What is the sound from the rear wheel when starting the car?
2 Answers
This is the sound from the braking system. Below is relevant information about the braking system: 1. Introduction: The braking system consists of a control system, hydraulic system, and power assist system. 2. Working principle: The principle of the braking system is to generate significant friction, converting the vehicle's kinetic energy into thermal energy. As we all know, energy cannot be created or destroyed, it can only be transformed from one form to another, or transferred from one object to another, with the total amount of energy remaining constant during the process of transformation or transfer. During acceleration, the car converts chemical energy into thermal and kinetic energy, and when braking, the braking system converts the car's kinetic energy into thermal energy, which is then dissipated into the air.
I've been repairing cars for many years. A noise from the rear wheels during startup is mostly caused by rusted brake discs sticking, especially after parking overnight or starting after rain when you'll hear friction sounds. It could also be due to loose wheel hub bearings, creating abnormal noises when the wheels rotate while driving. Don't underestimate this issue—it can seriously affect braking performance if left unchecked. I recommend inspecting the brake system and wheel axle areas as soon as possible. Regular car maintenance can prevent rust; just use some brake cleaner. Safety is no small matter—don't delay repairs to save money and end up needing major overhauls. Taking some time to check things is always worthwhile.
