335i M Sport Brakes Squeal while in motion?? - BMW 3-Series Forum (F30 / F32)

martinf79 · 02-19-2013, 04:35 PM

So... I've had my 335i M Sport since October now. Have loved every minute of it. I've been following the forum for months now... and have read all of the threads regarding the upgraded M Sport brakes and the "squeal" claim.

Well... I'm pleased to say that my brakes have not made any noise while actually braking. What's happened over the last week or so (and this has happened 3 times now) is that when I get in the car after its been parked after a good amount of time and pull out of the parking sport (front facing), I hear a very loud audible squeal sound (like a screech)... like the warning indicator would make on worn down brake pads ... or as though the parking brake is still engaged.

After about 5 seconds or a hard brake... the sound goes away...

WTF??? What's going on? Is something not releasing itself (maybe because its wet or cold)??? Would like to bring it in... but can't always replicate it.

Just wondering if anyone else has had this issue? Thoughts?

BavarianFanatic · 02-19-2013, 04:59 PM

Is there any loose gravel/salt on the roads in your area? More than once I've had gravel get caught between the backing plate and rotor. It's a pretty horrible sound to say the least.

martinf79 · 02-19-2013, 05:52 PM

Quote:

Originally Posted by BavarianFanatic

Is there any loose gravel/salt on the roads in your area? More than once I've had gravel get caught between the backing plate and rotor. It's a pretty horrible sound to say the least.

I guess it's possible. No gravel... But possibly salt. But wouldn't the sound be constant until it wore away?

martinf79 · 02-20-2013, 07:04 PM

Quote:

Originally Posted by martinf79

Quote:

Originally Posted by BavarianFanatic

Is there any loose gravel/salt on the roads in your area? More than once I've had gravel get caught between the backing plate and rotor. It's a pretty horrible sound to say the least.

I guess it's possible. No gravel... But possibly salt. But wouldn't the sound be constant until it wore away?

Well conducted some of my own diagnostics on the car today. Appears as though the parking brake isn't fully releasing itself in certain instances, hence the squealing is coming from the brakes still partially touching. Guess it's time to bring her in.

jopa489 · 02-20-2013, 07:57 PM

Do you engage the handbrake while the car is parked?

martinf79 · 02-20-2013, 11:58 PM

Quote:

Originally Posted by jopa489

Do you engage the handbrake while the car is parked?

Yes. Why?

02-19-2013, 04:35 PM	#1
martinf79 Lieutenant Drives: F30 335i M Sport Join Date: May 2012 Location: Toronto, Canada Posts: 597 iTrader: (0)	335i M Sport Brakes Squeal while in motion?? So... I've had my 335i M Sport since October now. Have loved every minute of it. I've been following the forum for months now... and have read all of the threads regarding the upgraded M Sport brakes and the "squeal" claim. Well... I'm pleased to say that my brakes have not made any noise while actually braking. What's happened over the last week or so (and this has happened 3 times now) is that when I get in the car after its been parked after a good amount of time and pull out of the parking sport (front facing), I hear a very loud audible squeal sound (like a screech)... like the warning indicator would make on worn down brake pads ... or as though the parking brake is still engaged. After about 5 seconds or a hard brake... the sound goes away... WTF??? What's going on? Is something not releasing itself (maybe because its wet or cold)??? Would like to bring it in... but can't always replicate it. Just wondering if anyone else has had this issue? Thoughts? __________________ 2013 335i ///M-Sport \| MPPK ON ORDER \| AW \| BD Leather \| 19” M3 ZCP Wheels \| M-Sport Brakes \| Adaptive M-Suspension \| Variable Sport Steering \| Premium Package \| Enhanced Bluetooth \| Sirius \| BMW Apps \| Heads Up Display \| Speed Limit Info \| M Performance Grill \| Front/Rear Painted Reflectors \| Coded
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02-20-2013, 07:57 PM	#5
jopa489 BMW/Detailing Addict Drives: Estoril F30 335i 6MT Join Date: Mar 2009 Location: New England Posts: 6,554 iTrader: (8)	Do you engage the handbrake while the car is parked? __________________

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02-19-2013, 04:59 PM	#2
BavarianFanatic Too much is never enough Drives: Too Many Join Date: Mar 2008 Location: SE PA Posts: 718 iTrader: (0)	Is there any loose gravel/salt on the roads in your area? More than once I've had gravel get caught between the backing plate and rotor. It's a pretty horrible sound to say the least.