Having spent 10 years in Vancouver some time ago, and now 22 years in Kelowna (and always have had snow tires), I bet there was a lot of "mayhem" (cue the insurance ad on TV) on the Lower Mainland streets these past days. I know how many Vancouver drivers are in the snow, and the snow is usually very wet snow, and close to ice in most cases. Without snow tires, you are deadmeat, even with them, sometimes it's chancey.
And that doesn't take into account the large portion of "less than top-notch" drivers who reside down there.
Good luck, guys, you'll need it.......
2012 328iTouring xDrive Black Sapphire
Previous BMWs - 2012 135i MSport 6MT Jet Black(sold), 2012 135i MSport LMB DCT(sold), 2011 X3 35i MSport VR (sold), 2009 M3 Sedan AW (sold), 2008 535xi MSport AW (sold), 2007 328xiT Barbera (sold), plus 11 others in the 70s & 80s.