Thanks guys for all your advice. I think I will get a pair of studded tires after the first snowfall. I don't really want to swap out my tires since I have a hub dynamo and an internal hub, it would be too much work. On the streets of Toronto I will have some snow, some ice, and mostly slushy/dry asphalt. Any recommendation for a tire for these conditions? I have a hybrid size tire (not sure what the actual size is).