One of the annoying noise which the advent of sound 'srek-srek'yang appeared drowned when the car is started. The main cause occurs due to the uneven surface of the disc. Usually can also be caused by previous discs already experiencing hard object collision.
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As a result, the disc is easy to dent and no center because of the heat of friction.
To eliminate noises are very annoying, can only be done by replacing your brake disc. Or by pressing the second way, it could also pluck discs back. If not, your driving comfort is compromised, such as the completion of this very necessary to be done.