I have a 2003 Mini Cooper S. In the winter I prefer not to use the parking brake and always park my car in 2nd gear. For the past 2 years I didn't have any problems, but recently my car started to roll back when parked on incline. First I thought it was because of a patch of ice, but then it happen again without ice. As my driveway is on an incline I'm afraid that the car will end up crashed in a tree one morning. I have been told different things by different people, but can't seem to figure out what is actually true. Anyone any thoughts on what it is and what I should do?