These tires came stock on my 2011 328i. They started off well enough. However, by 15K miles, they got pretty loud. By 20K, noise was crazy. At 28K, people don't want to ride in my car due to the noise.
The front tires have loads of tread left on them while the rear's were toast at 25K. I took the car to my local BMW dealer two weeks ago. They told me that the tires were cupped (no longer round) and should be replaced as soon as possible.
I've driven the car on the autobahn several times. The car's been very stable at 130MPH+. Cornering is pretty stable as well; however, steering feel does not seem ideal (that said, I've never had other tires on this car so I'm not sure). Also, the ride is pretty decent. I lot people complain how harsh these tires are. I don't agree. Maybe because I'm in Europe and the roads are quite good.
I'll probably replace with Michelin Pilot Sport 3s. I don't see the value in run flats.