The life and safety of the motorist depends on the effective operation of the braking system. The appearance of extraneous sounds during the operation of brake pads can be caused by many reasons that require the most careful approach to this problem.
The braking system of a car is a guarantee of the safety of both the driver and the passengers of the car. Therefore, any disturbances in the operation of this system cannot but cause concern for the motorist. Extraneous sounds emitted by brake pads: creaking, humming, whistling often alert the owner of the car and force them to find out the cause of these sounds. Are there any serious consequences in the appearance of hum or other sounds in the brake pads, and what causes these sounds?
Brake pad material
The automotive market today offers a wide range of consumables and spare parts, both original and their counterparts. Sometimes among the analogs there are either fakes or parts made of low-quality material. Violations in manufacturing technology, changes in the components of the composition of the material, lack of compatibility of the material of the pads and the brake disc can lead to the appearance of extraneous sounds.
Brake pad wear
Most brake pads have special metal pressure plates to indicate pad wear. If a strange sound appears during braking, it is possible that the pads are already worn out and need to be replaced. It is recommended not to delay the replacement, because worn out pads can severely damage the brake discs. If the brake pad is worn unevenly, humming can be caused by vibration caused by slight misalignment between the pad and the brake disc. Such a problem is treated by replacing the pads and at the same time it is advisable to thoroughly lubricate the caliper guides with graphite grease.
Brake pad shape
The brake pad base for each car model can have its own characteristic shape. An improperly selected pad shape and its inadequacy to the brake disc are often the cause of extraneous sounds. In addition, it does not hurt to carefully inspect all the parts of the brake mechanism: accidental ingestion of foreign objects in the process of movement - pebbles, sand, debris can also cause vibration, buzzing and other alarming sounds.
Improper operation of the pads
From time to time, motorists notice the peculiarity of the brake pads: at low speeds, new, not yet used pads may not be fully wrung out from the brake discs, especially if the discs are already worn out and have irregularities around the circumference. As a rule, over time, the pads rub against the disc and extraneous sounds disappear.
