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I'll keep this simple.
- Only get B&O if you ride in your M5 a lot by yourself.
- Only get CP if you are going to track your M5 more than 2 times a year or if you want bragging rights/look of 601M wheels.
That's as simple as I can make it. If you get those things for any other reasons than those, in my experience of owning an F10 M5 for over a year and a half, they are a waste of money.
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