Ok what in the hell is this,,,it’s called a friction washer,,,I had a F86 X6M,,,,,customer said he hears a ticking noise from the front end while turning and sometimes while braking,,,,I test drove the vehicle and the was definitely a ticking noise coming from both front tires while turning in a parking lot area,,,,this is a friction washer to stop this problem.
So I have to remove both front brake disc rotors and sand and clean the mating side of the rotor to wheel hub.
This is what it looked like after I used sandpaper to clean the surface,,,,but we did not clean the wheel bearing hub,,,,don’t know why this was BMW request to not sand the surface of the wheel bearing hub.
This is the friction washer placed on the wheel bearing hub,,,that friction washer get sandwiched between the brake disc rotor and wheel bearing hub,,,,I have to say the noise was gone after the repairs.
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bmwtechnician 
Have you seen his problem in other vehicles?
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Yes we have had some front wheel bearing clicking noise,,,that was on F2 and F10,,,,we replaced the wheel bearing on those cars
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Hello BMW tech. I’ve been noticing a ticking sound on my car. I uploaded a video. If you can take a look that would be awesome! 328i Coupe N51 Engine. http://tinypic.com/r/250jeo4/9 Thank you!
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Sorry unable to hear the video,,,,can you put it on YouTube
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sorry I don’t have youtube I used a different site. The sound louder when cold and it slowly gets quiet as oil temp goes over 200. When oil temp is at 240 it goes away. https://streamable.com/8yh3s
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Thank for the video,,,I have never heard that noise before,,,,can you do another video with the front hood open and of the engine might help me find where the noise is coming from,,,,the noise could be the drive belt tensioner making noise?
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