[dradernh]

Originally Posted by 60_Driver

Good points. I don’t plan to sell the car anytime soon so I’m not concerned with resale. Are you comfortable with the idea of having an LSD installed at a good independent shop or is that the type of job you’d stick with the dealer for?

Any decent shop can do it. I'd look for one that specializes in BMWs.

If you haven't id'd one yet, I highly recommend Mike Morris' shop in Newbury, Mass: https://schnellerbmw.com/. VSR in Bedford, NH is another I've used that can do the job: http://www.vsr1.com/.

I suggest installing Turner Motorsport's rear subframe bushings at the same time; they'll enable you to get more out of the diff: https://www.turnermotorsport.com/p-3...ame-mount-kit/. Although Turner says there's "a minimal increase" in NVH, I haven't noticed it in my car. That may just be me, though.

If you end up getting a diff, be sure and let us know what you think of it!