Originally Posted by JCL

You absolutely need winter tires, especially in Vancouver since Dec 17th.

Best bet is to have a separate set of winter wheels, with dedicated winter tires. That way you can get a smaller wheel (18") and the tires will perform better in the snow, and not be as expensive as 20". Skip the all-seasons, and get the proper ones. I got mine at my dealer, but you can get non-OEM wheels as well.