05-05-2024, 06:04 PM | #1 |
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High pitch grinding noise as wheel speed increases
Help! I am trying to troubleshoot a high pitch grinding noise on my 2013 X5 x35i, 87k miles. It's doing that noise since about ~11 months, or I started to notice it last last spring. As per the title, it's not RPM related. Transmission got services 4 months ago, and runs smooth.
As per my mechanic, it's not a wheel bearing. Another (old) mechanic changed the rear disk pads around that same time-frame. FYI - got a complete front disks+calipers upgrade in July last year, and the front diff got replaced 2 years ago (before I purchase the car). The car runs A1 and I am at a lost. Any insights ? Eric, from Montreal. |
05-06-2024, 01:07 PM | #2 |
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If it is only at slow speeds and related to wheel speed it is probably a wheel bearing. You'll hear the wheel bearing go bad many months before you can actually detect any play.
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05-06-2024, 08:30 PM | #3 |
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There's no play, but I will go recheck it to be 100%. The noise is high pitch metallic rubbing in nature, and increases as wheel speed go faster, then summit. The sound didn't change in intensity nor pitch since I noticed it.
I notice it a lot more when let say I drive in a street with cars parked on both sides. Could a differential going bad do that noise? Much appreciated. |
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05-07-2024, 03:23 AM | #4 |
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Definitely sounds to me like a wheel bearing. Again, they start to make noise looong before actually having any play. So there is no real need to replace it yet.
If a differential made the noise you'd be able to change the sound just with the gas pedal when free wheeling. Gas pedal pressed (sound off), gas pedal released (sound on). |
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05-07-2024, 03:04 PM | #5 | |
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Quote:
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07-31-2024, 03:20 PM | #6 |
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07-31-2024, 03:30 PM | #7 |
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08-07-2024, 03:04 AM | #8 |
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Usually a diff noise is possible to modulate the pitch of simply by pressing the accelerator pedal. Accelerator depressed = noise off, releasing the pedal = noise on.
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