Rent a car. Cheaper and no wrecked beemer. Get the extra ins tho.
Snows work very well actually. I would suggest Bridgestone Blizzaks. Just remember tires are a compromise. What makes the Snow tires grippy means you sacrifice wear. You won't get great read life so get em off in the Spring as early as you can in order to optimize the number of seasons you can get.
Well if it's a 325 the newest it could be is an '06. Still 8 years old. Probably not worth renting a car to avoid driving IMHO.
Ofcourse. RWD is a alot of fun in the snow no matter how you cut it.
snow tires yes !!!! its a must, I live in Quebec y know about snow !!! buy some good tires and they are good for 4 o 5 years even in frozen temperatures put it in December and take off in march !!!!!!