ORIGINAL: Knyvet
I'm in Alaska and the most surprising thing I learned about cars in the winter is that in Fairbanks, for example, where it gets around 40 below (not unusual/very common in the winter) your tires end up flat. Block heaters and chains on tires I know - not being able to keep your tires inflated because it is too cold was a new one for me.
As for Seattle - kinda tough to deal with a snow storm when the city doesn't have plows.
Oh, this is intresting, do you use reguler Air in the Tires?
Here Nitrogen Gas is most usual.