How to deal with rusty brake discs, scratches and grooves, squeaking, and blackened wheels?

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rusty brake discs

Some users asked: a new car, drive less often parked, suddenly found rust around the brake disc, is it normal? Will it affect the brakes? Is the brake disc grooves because of bad quality?

Rusting brake discs is a normal phenomenon and will not affect the braking performance, so no special treatment is needed, just drive normally. After stepping on the brakes a few times, the brake pads will wear off the rust on them and they will become shiny again. Because most brake discs of domestic cars are made of cast iron, it is easy for iron to rust when it meets water, but the rust is only on the surface. Because the surface can come into contact with the air and oxidation reaction occurs, and then the rust is very slow because it is almost not in contact with the air, so even if you don’t drive for a long time, you don’t have to worry about rusting the brake disc.

Scratches and grooves on the brake discs are a normal phenomenon during use. There are hard metal powders in the brake pads, and some of the particles are relatively large, so they will rub against each other during use. Sometimes when the vehicle starts, it feels like the handbrake is not released, the car does not go, and the car makes a “thump” sound after the gas pedal, and then returns to normal. This is because the car’s brake disc and brake pads are stuck together because of rust, when the handbrake is released, these two parts are still not separated and remain in the state of braking, this situation happens from time to time, just step on the gas and drive normally.

Sometimes when the vehicle starts, it feels like the handbrake is not released, the car does not go, and the car makes a “thump” sound after the gas pedal is turned on, then it returns to normal. This is because the car’s brake disc and brake pads are stuck together because of rust, when the handbrake is released, these two parts are still not separated and remain in the state of braking, this situation happens from time to time, just step on the gas and drive normally.

When you hear the brakes squealing, you need to be alert to the possibility that the brake pads are thinning, so you should check them in time to see if they need to be replaced. If the brake pads are not thin, it is likely that the brake pads are too hard, so if you wear out the hard spots on the brake pads, they will no longer ring.

Clean the wheel
Clean the wheel

If you find that the wheel has become particularly dark, worry if it is leaking oil. In fact, this is not the case, because, in the long-term use of the brakes, the powder of the brake pads fall off and stick to the top, accumulating into a thick layer of stains

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