Why does the Bora make a braking sound when reversing?
2 Answers
The Bora making a braking sound when reversing is a normal phenomenon. When braking in reverse, the brake caliper lifts and impacts the upper bracket, causing the unusual noise. Definition of automotive braking: Braking, also known as deceleration, refers to the action of stopping or reducing the speed of moving locomotives, vehicles, other transportation tools, or machinery. The general principle of braking is to fix a wheel or disc on the high-speed shaft of the machine and install corresponding brake shoes, bands, or discs on the machine base, which generate braking torque under external force. Definition of brake pads: Automotive brake pads refer to the friction materials fixed on the rotating brake drum or brake disc of the wheel. The friction linings and blocks bear external pressure and generate friction to achieve vehicle deceleration.
I've noticed that it's quite common for the Volkswagen Bora to make noise when braking in reverse, especially during the first start in the morning or after rainy days. This is mainly because the brake pads are made of harder material, and the change in the contact angle between the brake pads and the brake disc during reverse can cause friction sounds. Another possibility is slight rust on the surface of the brake disc, especially if the car hasn't been driven for a few days. I suggest observing the pattern of the noise. If there's only a slight squeaking sound during the initial moments of reversing and it disappears after moving, it can generally be ignored. When washing the car, you can rinse the inner side of the wheel rims to prevent mud and sand buildup. However, if there's a sharp screeching sound every time you reverse, you should be cautious as it might indicate that the brake pads are nearly worn out. The thin wear indicator touching the brake disc will produce a loud noise. It's advisable to have a mechanic check the thickness during the next maintenance—safety comes first.
