Clunk noise from rear when backing out in the morning?

5tony · 08-12-2021, 02:25 PM

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Every morning as I back out of the garage, I hear a slight clunk or click that seems to come from the rear. I assume it's from the brakes or the differential. Does anyone else have this noise? Just wondering if it's something I should worry about. Not sure I had it before the break-in service.

Thanks!

Ex_Stig · 08-12-2021, 03:20 PM

Do you set the e-brake when you park the car? That could be causing the sound when it disengages. If not, take it to the dealer and have them take a look. Better safe than sorry.

rS2g · 08-12-2021, 03:25 PM

Does this happen when turning your wheel to nearly full lock while getting out of the garage?

I think it's the Ackerman Principle. I get it too when turning in reverse, typically full lock on wheel. It's normal.

5tony · 08-12-2021, 03:26 PM

Quote:

Originally Posted by GNALUZU

Do you set the e-brake when you park the car? That could be causing the sound when it disengages. If not, take it to the dealer and have them take a look. Better safe than sorry.

I don't use the parking brake in my garage.

5tony · 08-12-2021, 08:37 PM

Quote:

Originally Posted by rS2g

Does this happen when turning your wheel to nearly full lock while getting out of the garage?

I think it's the Ackerman Principle. I get it too when turning in reverse, typically full lock on wheel. It's normal.

Happens backing straight out of the garage within the first or second rotation of the wheels.

rS2g · 08-12-2021, 08:41 PM

Ahhh. My theory is out

shoei · 08-12-2021, 10:03 PM

Quote:

Originally Posted by 5tony

Quote:

Originally Posted by rS2g

Does this happen when turning your wheel to nearly full lock while getting out of the garage?

I think it's the Ackerman Principle. I get it too when turning in reverse, typically full lock on wheel. It's normal.

Happens backing straight out of the garage within the first or second rotation of the wheels.

Clunk or a metallic pinging sound?

5tony · 08-13-2021, 07:41 AM

Quote:

Originally Posted by shoei

Clunk or a metallic pinging sound?

Soft clunk. Almost like something in the trunk tipped over.

5tony · 08-13-2021, 07:42 AM

Quote:

Originally Posted by rS2g

Ahhh. My theory is out

I know what you're talking about though. My 911 does that whenever the temperatures drop below 60.

milehighguy · 08-13-2021, 07:59 AM

Does this happen after you've washed your car and let it sit for the night? Could be the calipers unseating themselves from the rotors.

08-12-2021, 02:25 PM	#1
5tony Lieutenant 147 Rep 500 Posts Drives: '21 M5/'15 X5 35i/'88 M3 Join Date: Jul 2010 Location: Atlanta iTrader: (1)	Clunk noise from rear when backing out in the morning? Featured on BIMMERPOST.com Every morning as I back out of the garage, I hear a slight clunk or click that seems to come from the rear. I assume it's from the brakes or the differential. Does anyone else have this noise? Just wondering if it's something I should worry about. Not sure I had it before the break-in service. Thanks! __________________
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08-12-2021, 03:20 PM	#2
Ex_Stig Colonel 2594 Rep 2,683 Posts Drives: '24 X7 M60i Join Date: Jan 2014 Location: Scottsdale, AZ iTrader: (0) Garage List 2024 BMW X7 M60 [10.00]	Do you set the e-brake when you park the car? That could be causing the sound when it disengages. If not, take it to the dealer and have them take a look. Better safe than sorry. __________________ Ex Stig '25 M5 Touring (on the list, first slot) '24 X7 M60i '22 M5 CS - (sold)
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08-12-2021, 03:25 PM	#3
rS2g Private First Class 181 Rep 132 Posts Drives: 2022 M5 Comp-GrigioTelesto-Tat Join Date: Dec 2017 Location: Ottawa, Canada iTrader: (0)	Does this happen when turning your wheel to nearly full lock while getting out of the garage? I think it's the Ackerman Principle. I get it too when turning in reverse, typically full lock on wheel. It's normal. __________________ 2022 F90 - (Comp) Grigio Telesto - Tartufo MPE 2018 F90 - Azurite Black - Tartufo 2014 F10 - Singapore Grey - Silverstone 2013 F10 - Space Grey - Sakhir Orange
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08-12-2021, 08:41 PM	#6
rS2g Private First Class 181 Rep 132 Posts Drives: 2022 M5 Comp-GrigioTelesto-Tat Join Date: Dec 2017 Location: Ottawa, Canada iTrader: (0)	Ahhh. My theory is out __________________ 2022 F90 - (Comp) Grigio Telesto - Tartufo MPE 2018 F90 - Azurite Black - Tartufo 2014 F10 - Singapore Grey - Silverstone 2013 F10 - Space Grey - Sakhir Orange
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08-13-2021, 07:59 AM	#10
milehighguy Private First Class 79 Rep 101 Posts Drives: 2024 M3 Comp- On order Join Date: Oct 2015 Location: COLORADO iTrader: (0)	Does this happen after you've washed your car and let it sit for the night? Could be the calipers unseating themselves from the rotors.
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