Rear differential issues?
I have an '09 335i 6AT x-drive with 64k miles. Tonight, the car started feeling funny around slow turns, vibrating a bit like something was slightly grinding and making a clicking noise every so often This primarily occurred when turning right, but happened once turning left (I did a series of tests around my neighborhood). It would also whine a bit under acceleration, almost sounding like someone with an aftermarket exhaust was coming up behind me. When I got home, it clunked pretty bad when shifting into R as well as D. Any ideas? Could it be as simple as replacing the diff fluid, or do you think it's a more serious issue? It's got me kinda nervous!
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