It is no exaggeration to say that high-quality brake discs, along with pads, are essential elements of serviceable brakes. Moreover, it is worth noting that these two important elements of the braking system work together, which means that the failure of one part critically affects the other. Therefore, even if a new set of brake pads was installed on time, and the corrosive, crooked, with a heterogeneous surface composition, the disc was not touched at the same time, then the car will not slow down anyway.
Experienced drivers usually say that "a good knock will show itself", meaning that you should not listen to extraneous sounds in the car. And even more so, there is no need to run headlong into the service about this. However, firstly, this proverb is more suitable for domestically produced cars, which, even new ones, are not ideal for quiet operation of the engine or soundproofing of the passenger compartment. And secondly - knock knock strikes. A brake disc that has shown its knock at a speed of just over 30 km / h can lead to a fatal accident.
Prevention of brake disc malfunctions consists in timely inspection of surfaces. Also, it will not be superfluous to check the temperature of the part. It is best to do this before and after using the vehicle, thus determining how quickly the brake disc heats up.
A faulty disc can also be identified while driving. Wheel runout, jerking, yawing of the vehicle when braking, irregular impacts that are heard during significant braking, as well as short-term grinding, all these factors, as a rule, indicate serious problems in the braking system. However, the source of these problems is unlikely to be determined by ear.
If you have experience in self-troubleshooting, then you can cope with replacing the brake disc yourself. However, the service, it is quite possible, will do everything much faster and more professional. However, it should be borne in mind that it is better to change disks in pairs. That is, if the rear left brake one needs to be replaced, then it is better to immediately change the right one too.
There are two irreconcilable camps among car owners. Some drivers claim that if the disc is corroded by more than 50%, curvature or significant chipping of the surface, it must be changed. Others are sure that modern recovery tools are so good that they can even save a completely "dead" disk. Each vehicle owner must decide for himself how to troubleshoot the brake system. One thing is clear: after having prevented the disk and discovering defects in its work, you should not postpone the problem on the back burner, but you should try to take all measures to correct the situation as soon as possible.
