A winter like last year is my only concern about buying a RWD car again. As of right now I'm planning on getting an M3 sedan when 09 CPO's hit around $45k. I'd have to do winter tires and perhaps have some Thule chains as a backup.
Either that or I need to wait until my car is paid off and have two cars.
I had no issues last year and I'm on all-season PZeros.