Something interesting. I have a friend who works for BMW USA....I asked his opinion on the 14k oil changes...as I'm old school. I cannot wrap my mind around the idea that this is really safe for a car beyond 100k miles.
His statement was that BMW does these long intervals for environmental reasons. THey've tested the oil they use, and they've found that its maximum lifespan is usually around 14k miles. so they do the changes @ that interval...as to minimize the amount of waste oil.
This could be smoke and mirrors, but I did find it interesting. I'm not claiming this to be 100% fact, so don't argue with me on it. if you think I'm full of shyte, then move on. I just found it interesting and thought a few others may as well.
The best 2013 M sport is owned by me.