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Clanking sounds during the reverse

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Old Apr 4, 2018 | 08:10 PM
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yober37's Avatar
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From: Vancouver BC
2012 C300 4-MATIC Sport, 2012 BMW X5 xDrive35d
Question Clanking sounds during the reverse

Last week I’ve changed the front rotors and brake pads on my 2012 C300 4matic sport. All bolts and nuts were torqued to the spec.
Last couple of days I started to notice that during the parallel parking maneuver , when the steering wheel is all the way turned clockwise (to the right) and just as the car starts to move in reverse I hear for a second some kind of clanking sound.
What should I check first?
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Old Apr 5, 2018 | 01:11 PM
  #2  
bowenxue98's Avatar
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Joined: Mar 2017
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From: Vancouver, BC
2014 Mercedes C350 Coupe
Originally Posted by yober37
Last week I’ve changed the front rotors and brake pads on my 2012 C300 4matic sport. All bolts and nuts were torqued to the spec.
Last couple of days I started to notice that during the parallel parking maneuver , when the steering wheel is all the way turned clockwise (to the right) and just as the car starts to move in reverse I hear for a second some kind of clanking sound.
What should I check first?
A video would be nice. I also have a little clunk when I reverse while having the wheel turned all the way to left or right. I think it has to do with the wheel camber/castor as those angles change when you turn the wheel all the way to the right or left. That being said, in those extreme positions, the wheel is tiled into the direction its turning, so when moving forwards, the wheel will "roll" sideways onto its flatter surface, providing better traction in the turn. But if you're moving backwards, all that is in the wrong direction as it is not designed to provide better traction when moving backwards. I think that's why it makes a clunk, completely normal but if its too loud, it may be loose bushings/bearing in the front suspension arms.
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