Factors That Affect How Long Brakes Will Squeal
Some newly installed wholesale brakes will make some noise each time you step on the brake pedal. That noise gradually reduces until it stops being emitted. However, some vehicles emit brake noises from the rear brakes for a long time. This article discusses some of the reasons why the rear brakes of your car may keep emitting a squealing noise.
Presence of Brake Bias Valves
Some newer cars are fitted with an automatic brake bias valve. This valve limits the amount of brake fluid that is directed to the rear tyres when the car is lightly loaded (with one or two people, for example). When the vehicle is fully loaded, the valve releases more brake fluid to the rear tyres. This enables those rear brakes to exert a stronger braking force. Thus, lightly loaded vehicles are likely to experience longer squealing times. This is because the brakes take longer to exert their full braking force on the tyres. That longer duration means that the new brakes will not be broken in quickly. The brake bias valve can be adjusted in order to reduce the squealing.
The Condition of the Rotor
The condition of the brake rotor may also affect how long you hear the squealing in your new brakes. For instance, a rotor that has developed a defect, such as embedded mud that alters its thickness, will squeal for a longer time than a rotor that is perfectly flat. The brake rotor needs to be inspected in case the brake keeps squealing for a longer time than it usually does once you replace worn brake pads. An appropriate remedy can be implemented, such as replacing a worn rotor or washing off caked mud.
The Location of the Handbrake Shoe
Some vehicles are designed in such a way that the handbrake shoe is installed on the rear brake rotors. Such vehicles may have hollow brake drum bores. That hollow bore resonates as the brakes are applied. That resonance can make the brake noise to be much louder than it would have been if there were no hollow. The rotor sections in such vehicles may also be thin in order to leave space for the handbrake shoe. Those thin sections may also amplify any brake noise that is present in the rear wheels. The solution to this problem may involve contacting the carmaker for advice on what spares are available to combat that problem. Aftermarket parts may also address that brake noise.
As you can see, the noise that you hear in the rear brakes may originate from other car parts connected to the brakes. It is therefore advisable for you to contact a brakes expert so that an appropriate solution for the problem is found.