Quote:
Originally Posted by johnwu1125
My 2013 M5 has 11000 km on it and the squeal noise from brake occasionally happened when I applied brake from low speed to a complete stop. I sent my car back and BMW said it was normal and the noise was due to uneven accumulation of iron dust on the braking disc. Although this noise doesn't come up all the time, it completely destroys my confidence in BMW.
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With all due respect this is a silly attitude to take. Brakes, especially high performance brakes, will squeal when covered with brake dust, rust, etc. Further they are more prone to squeal with a deposit of pad compound on them. This is why it's very important to keep the wheels clean and to properly break in the pads/rotors and to occasionally perform some hi speed stops.
Frankly when a person buys a high performance vehicle that comes with high performance brakes there are things that just must be accepted. If not, buy a Lexus.
Bish