for toronto?
only really need them a few times in the winter for ploughed roads.
You will want studded snow tires...
IF you ride over bridges in the early morning
IF you take the cycling paths
IF there's a snow storm heading in, and even then, this only happens 3~4 times during winter.
IF you ride the residential zones, which get ploughed later.
I would put the boundaries at 403/407 to the south west, 407 to the north and Markham Rd to the east. If you live outside of this box, you will want studded snow tires almost 100% of the time it says "snow" in the forecast.
Every single time there's a forecast for "snow storm" in Toronto, it ends up as a nothing notable. Now the only exception to that rule is when they put "severe" in front of snow storm and it's more than 3cm of snow fall predicted.
Last edited by AEO; 12-01-10 at 04:33 PM.