I am a retired prosecutor and have had 7 BMWs now, starting with a '97 2.8 liter Z3. Next was a '99 Boston Green M Roadster followed by an '04 E46 M3 which I had until 2011. All of the forgoing were 5 or 6 spd stick, but in 2011 I replaced the M3 with a 135i with 7spd DCT. I love the car and this fantastic gearbox, but hate the run-flats. We have also had 2 X5s and now own an 2011 X3 35. we love the X3's drivability, but hate the run-flats and we have had a series of serious electronic glitches including a freeze up o f the shifting mechanism that kept it in the shop for (I kid you not) 9 days!! Has anyone else had a similar experience? BMWs are still the "Ultimate Driving Machine" but I have the very strong impression that they are putting electronics in these cars that are just not ready for prime time.