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Regular brake service is an important part of proper vehicle maintenance; neglect brake service and you may have major problems. Below are 4 warning signs that your brakes need immediate service.

If you hear a high-pitched screeching sound when you apply the brakes, this usually indicates that your rotors have glazed. Glazing occurs when the brakes are repeatedly applied while driving at high speeds; this causes friction between the brake pad and the rotor, leading to the rotor becoming overheated, and then burning or warping. This can be easily fixed by taking your vehicle to your local repair shop and having a new surface machined onto your rotor.

In addition to excessive heat, the warping of your rotors can also be caused by the thinning of the metal, which is noticeable by vibrations in your vehicle when you apply the brakes. If the front-wheel rotors have warped, you will feel the vibrations primarily in the steering wheel; and if the warping has occurred in the rear-wheel rotors, then the vibrations can be felt mainly in the body of the vehicle itself. Again, just like with glazed rotors, this can be repaired by having your rotors resurfaced.

If you hear a grinding noise when you apply your brakes, this could mean that the material of your brake pad has worn away and your rotor is now grinding against the brake pad's metal plate. This causes friction and heat, extreme enough to melt the material, make the grinding sound, and even cause your brakes to stick. This is very dangerous, as well as expensive, as the brake pads and rotors cannot be repaired, but instead, need to be replaced.

Finally, if you find that your vehicle tends to pull to one side when you brake, this could be due to the brake calipers not applying all four brakes evenly with each other; this is mainly caused by a leak in one of the calipers. A visual inspection of the calipers can locate where the problem is and the leaky caliper can be replaced.

In most cases, the screeching, vibrating, grinding, and pulling can be avoided by simply having your brakes serviced regularly.

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