New Brakes, Squeaky Front Passenger at Low Speed

MattGrantham · 08-01-2013, 07:21 PM

Hey folks,

I've been holding off on posting and asking for help since I figured the issue would go away with bedding, but it's still rearing it's loud, chirpy, embarrassing head.

I had new Zimmerman cross-drilled rotors and EBC Green Stuff pads installed about 3 months (and ~1500km) ago. I followed doctors orders and drove easy for ~200km around which point I started to notice a high pitched squeak coming from the front passenger brake. The squeaking ONLY occurs at very very low speeds when coming to a stop. This is especially annoying since I live in a busy downtown core and drive an e93 335 so it's super embarrassing with the top down and happens at every intersection.

Notes:

- Issue only occurs when the brakes have had 5-10 stops to warm up a bit. In other words if I leave the car for a few hours I can get around the block a few times before I start hearing the dreaded noise.
- I can sort of get around the issue by slamming on the brakes since it only squeaks with minimal pedal pressure, but it's unavoidable when slowly moving forward in stop and go traffic.
- I realized I hadn't bedded the brakes so took the car out to the country and followed EBC's instructions by performing 2 sets of 5 hard stops from 100km to 10km. After bedding I noticed the sound went away for about a half hour of driving before coming back, so I guess it's possible I didn't bed the brakes "hard" enough. I should add that I noticed a distinct brake smell and slight fade nearing the end of the bedding process.
- I am NOT noticing any squeaking with my foot off the brake pedal when accelerating at low speeds as I know some owners have experienced in the past.
- Went to a parts store and they suggested anti-seize. Picked up a packet but wanted to check with the experts on our cars before jumping in over my head.
- Not sure if this is relevant, but the rim on the affected brake is slightly unbalanced. I'm going to get the car roadforced, but have been busy recently.

Any help is appreciated. If anyone local to Toronto can help, I'd be willing to pay handsomely!

asianstutter · 08-01-2013, 10:14 PM

Did you change the brake sensor?

MattGrantham · 08-01-2013, 11:59 PM

Yes, new front and rear sensors were installed. Isn't the front sensor on the driver's side though?

08-01-2013, 07:21 PM	#1
MattGrantham 2008 e93 335i 11 Rep 80 Posts Drives: 2008 e93 335i Join Date: Jul 2011 Location: Toronto iTrader: (0)	New Brakes, Squeaky Front Passenger at Low Speed Hey folks, I've been holding off on posting and asking for help since I figured the issue would go away with bedding, but it's still rearing it's loud, chirpy, embarrassing head. I had new Zimmerman cross-drilled rotors and EBC Green Stuff pads installed about 3 months (and ~1500km) ago. I followed doctors orders and drove easy for ~200km around which point I started to notice a high pitched squeak coming from the front passenger brake. The squeaking ONLY occurs at very very low speeds when coming to a stop. This is especially annoying since I live in a busy downtown core and drive an e93 335 so it's super embarrassing with the top down and happens at every intersection. Notes: - Issue only occurs when the brakes have had 5-10 stops to warm up a bit. In other words if I leave the car for a few hours I can get around the block a few times before I start hearing the dreaded noise. - I can sort of get around the issue by slamming on the brakes since it only squeaks with minimal pedal pressure, but it's unavoidable when slowly moving forward in stop and go traffic. - I realized I hadn't bedded the brakes so took the car out to the country and followed EBC's instructions by performing 2 sets of 5 hard stops from 100km to 10km. After bedding I noticed the sound went away for about a half hour of driving before coming back, so I guess it's possible I didn't bed the brakes "hard" enough. I should add that I noticed a distinct brake smell and slight fade nearing the end of the bedding process. - I am NOT noticing any squeaking with my foot off the brake pedal when accelerating at low speeds as I know some owners have experienced in the past. - Went to a parts store and they suggested anti-seize. Picked up a packet but wanted to check with the experts on our cars before jumping in over my head. - Not sure if this is relevant, but the rim on the affected brake is slightly unbalanced. I'm going to get the car roadforced, but have been busy recently. Any help is appreciated. If anyone local to Toronto can help, I'd be willing to pay handsomely!
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08-01-2013, 10:14 PM	#2
asianstutter Second Lieutenant 11 Rep 270 Posts Drives: 2006 BMW 330xi Join Date: Nov 2012 Location: Toronto iTrader: (2)	Did you change the brake sensor?
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08-01-2013, 11:59 PM	#3
MattGrantham 2008 e93 335i 11 Rep 80 Posts Drives: 2008 e93 335i Join Date: Jul 2011 Location: Toronto iTrader: (0)	Yes, new front and rear sensors were installed. Isn't the front sensor on the driver's side though?
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