Originally Posted by Jay Arras

Depending upon how much / how often / how long you will encounter snow, you might want to consider a set of snow tires all around. If you have all-seasons on now with a fair amount of thread, that's the next best option, but if you have high performance summer tires on, you will have issues with snow. I have never heard of anyone using chains on a bimmer, except maybe in Finland. That's for really serious snow!