Metal scraping sound from wheel or brake?

Tex94 · 05-10-2020, 03:48 PM

So was driving home today and as a braked at a stop light I heard a loud metallic sounding squeal coming from the left front of the car. I wasn’t even sure whether it was my car but as soon as the light changed I heard it again as I pulled away and the sound kept going for another block and stopped just before I pulled over to see what it was. Could it have been a branch or stick In the wheel? Maybe a pebble inside the brake pad? By the time I pulled over the sound had stopped and I couldn’t see anything in any wheels indicating damage or anything stuck there. There was a slight brake wear smell coming from the left front tire where the sound emanated from. Sound did not return the rest of the way home and car otherwise is working perfectly.

Any ideas?

teaston · 05-10-2020, 05:04 PM

Possibly a rock stuck between the rotor and the guard.

383vett · 05-11-2020, 11:20 AM

Quote:

Originally Posted by teaston

Possibly a rock stuck between the rotor and the guard.

Usually the culpret.

Rhidium · 05-11-2020, 11:28 AM

Would think it would be too early for a G01 unless you drive a lot, but what about worn out brake pads?

Like other people said, a foreign material between the brake pads and rotor.. from rocks to oil/grease.

Tex94 · 05-17-2020, 09:47 PM

I think it must have been a rock. No repeat issues since. Thanks for the replies

05-10-2020, 03:48 PM	#1
Tex94 Private First Class 79 Rep 111 Posts Drives: BMW X3 M40i, Carbon Black Join Date: Nov 2018 Location: San Francisco iTrader: (0) Garage List 2019 BMW X3 M40i [0.00]	Metal scraping sound from wheel or brake? So was driving home today and as a braked at a stop light I heard a loud metallic sounding squeal coming from the left front of the car. I wasn’t even sure whether it was my car but as soon as the light changed I heard it again as I pulled away and the sound kept going for another block and stopped just before I pulled over to see what it was. Could it have been a branch or stick In the wheel? Maybe a pebble inside the brake pad? By the time I pulled over the sound had stopped and I couldn’t see anything in any wheels indicating damage or anything stuck there. There was a slight brake wear smell coming from the left front tire where the sound emanated from. Sound did not return the rest of the way home and car otherwise is working perfectly. Any ideas?
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05-10-2020, 05:04 PM	#2
teaston Banned 10995 Rep 32,881 Posts Drives: X3 M40d Join Date: May 2012 Location: The High Seas iTrader: (1)	Possibly a rock stuck between the rotor and the guard.
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05-11-2020, 11:28 AM	#4
Rhidium Lieutenant 274 Rep 426 Posts Drives: 2019 BMW X3 Join Date: Dec 2018 Location: WA iTrader: (0)	Would think it would be too early for a G01 unless you drive a lot, but what about worn out brake pads? Like other people said, a foreign material between the brake pads and rotor.. from rocks to oil/grease.
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05-17-2020, 09:47 PM	#5
Tex94 Private First Class 79 Rep 111 Posts Drives: BMW X3 M40i, Carbon Black Join Date: Nov 2018 Location: San Francisco iTrader: (0) Garage List 2019 BMW X3 M40i [0.00]	I think it must have been a rock. No repeat issues since. Thanks for the replies
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