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What should I do if the brake discs of the car are rusty due to rainy days or long-term suspension?

Release time:

10 Jul,2018

Most of the brake discs are made of cast iron, and they are exposed to the outside for a long time, and the working environment is relatively harsh, and they often encounter the test of ice and fire.If the vehicle is parked for a long time or in a humid environment, some rust will form on the surface of the brake disc, and these rust will more or less affect the normal operation of the brake system. Therefore, it is necessary for us to consciously remove it.

If there is only a slight rust on the surface, then we can use the method of continuous braking while driving to remove it. Of course, this is under the premise of ensuring safety and not affecting public transportation.While driving, gently press the brakes and let the friction between the brake pads and the brake discs “polish” the surface.

If the rust situation is more serious, we do not recommend using the above method of braking to remove rust.When there is more rust, the surface of the brake disc will be uneven. In this case, the brake will cause the body to shake, and the driver can clearly feel the abnormality of the brake pedal, steering wheel and body.At this time, it will be difficult to get rid of rust. Even if it is barely “polished”, it will cause abnormal wear and tear of the brake pads afterwards, and there will still be jitter.

Therefore, it is best for us to drive the vehicle to the maintenance factory, remove the brake discs, polish the rust with sandpaper, check the surface of the brake pads for abnormalities, and conduct a road test after proper installation.Driving at a speed of 70KM/H on a flat road, brake multiple times to ensure that there are no abnormalities.If there is still jitter, it means that the surface of the brake disc is uneven and needs to be further polished and leveled or replaced as appropriate.