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2014 335 xDrive, square OEM 400M wheels & 225/45r18 wheels (2nd owner, but 1st was a lease who looked to run fully OEM)
Adding myself to the list, just got word from the dealership that my transfer case needs to be replaced.
I got the car with 45k on it (CPO), seemed to always have a faint friction noise (heard 5-30 mph) - became far worse this spring 2018 with about ~55k on the clock.
- BMW found nothing during the 60k service (done at 59k miles)
- brought it back due to friction/whirring noise during drive AND idle, dealer blamed it on bent wheels (accurate, but did not explain noise when stopped)
- 3rd time was the charm, brought it in this week (63k miles, new wheels & tires) and the noise was still there
What I've been hearing sounds like a race clutch - a cyclical noise that follows vehicle speed (not engine speed), and always sounded like it was coming from the front-middle of the vehicle (to the point I thought it might have been the ASD)
Unclear what the full failure reason was (wear or broken)
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