ipse dixit

Hmmm, what you say is interesting. So maybe I need to go back again to the dealer and ask more questions. Do you know what the issue is - is it faulty pads, faulty setup, or a tolerance issue? It seems that in some cases pad replacement does not cure the problem. Anybody know if there is a BMW service advisory on the brakes noise issue?
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Try bedding in your brakes.

Use the following procedure:

1. Begin with a series of ten partial braking events, from 60mph down to 10mph. This will typically raise the temperature of the brake components sufficiently to be considered one bed-in set. Each of the ten partial braking events should achieve moderate-to-high deceleration (about 80 to 90% of the deceleration required to lock up the brakes and/or to engage the ABS), and they should be made one after the other, without allowing the brakes to cool in between.

2. This first set of stops in the bed-in process is only complete when all ten stops have been performed - not before.

3. The system should then be allowed to cool, by driving the vehicle at the highest safe speed for the circumstances, without bringing it to a complete stop with the brakes still applied.

4. After cooling the vehicle, a second set of ten partial braking events should be performed, followed by another cooling exercise. In some situations, a third set is beneficial, but two are normally sufficient.

After this, then you are done.

You must understand, high performance braking systems like to be pushed hard and are intended for hard braking. When used for normal daily, street driving the pads and rotors tend to lose their bed-in layer, which increases the likelihood of squeaks.

Heck, just be happy BMW isn't using Brembos for OEM brakes ... those squeak like a mouse caught underneath a rocking chair ...

TB CD

The bed-in procedure is good advice.

My 530 and now my 645 did the same thing. I never bedded in the pads, just drove the car.

The above poster is right. Using the brakes "gingerly" will cause this problem.

My Corvette has a track-based braking package. It's used solely for 9/10ths and up driving, and I never have had a squeaking problem with the brakes. They are of the type that need to be brought up to temperature before they work properly. If I drove this car in traffic and made regular Minivan-type stops, they'd squeal like a stuck pig, I'm sure.

So I took the 645 out on a desolate, flat road and followed the Brembo bed-in procedure for the brakes. Found a route home that didn't require me to use my brakes AT ALL (kind of hard to do, but I did it) and let them cool down.

It works, and it works well. Surely there are still harmonic squeaks going on, but they are now OUT OF RANGE of the human ear. And that's fine with me.

jgbmw

my car currently has:

squeaky brakes (dealer states this is normal)
window squeak (repaired once)
squeaky comforts seats (at every stop and start)
idrive button clanks when sliding down and right

this is one of the loudest interiors by far...

snap, pop, squeak

have luxury automobiles always been such non-luxury?

ipse dixit

You must have selected Option 1000 - musical car.

Honestly, for your brakes, try the bed-in procedure I outlined above. For the seats, try some WD-40. The i-drive button? That's a new one to me. Sorry, no help there.

stream

I've had brake squeaks--in varying degrees--in just about every high performance car I've owned. This is typically caused by the brakes becoming glazed (believe it or not caused by not braking hard enough). Take you car out on the highway and while traveling at, say, 60 MPH, brake hard (do it in the right lane when nobody is behind you) to get down to around 30 MPH, then accelerate and repeat a few times. This will burn off the glazing and you should be fine. Depending on your driving style, the squeak may return after a while, then you have to repeat the procedure above.

With my last BMW the dealer applied some anti-squeak substance to the brakes, which also worked well (this was before I learned about the hard braking method).

buddy

I had the same problem about 3 or 4 months ago about 18000 miles took it in the dealer said there is a TSB to shave down the sensor wich worked and 5000 miles later still no squeek or noise.

sleek545

it happenned with my car also.They fixed it,it turned out to be the sensors.It hasnt came back since

cader

I had the same problem (23,000 miles), I didn't believe them when they told me it was the Brake Sensors...when I picked it up...good as new...no more screeching...

smcd

I would definitely try what the earliest posters said and do some VERY hard braking to get the soccer mom braking surface off the pads. Personally, I've never had this problem but that probably speaks to my braking style.

And heck, you may as well have some fun before bringing it to the dealer if it doesn't work, right?

- Sean

my530i

Brake sensor causes the noise. It happened on my car, too, and they filed brake sensor a bit, and noise went away. It starts coming back now, but not as bad as before. It happens during hot days.