I have a Jan 2013 build 550i xDrive M Sport w/ DHP and ~1,200 miles on the odometer.
Zero tip in. Operates how you would expect.
Current: 2015 i3 REx | Giga | Ionic Silver Metallic
2013 550i xDrive | Jet Black | Venetian Beige | Dark Red Sycamore
2008 535xi | Jet Black | Cream Beige | Burl Wood
See, when the Government spends money, it creates jobs; whereas when the money is left in the hands of Taxpayers, God only knows what they do with it. Bake it into pies, probably. Anything to avoid creating jobs. - Dave Barry