Originally Posted by Arcanum

I rode through the Rochester NY winter on 40mm Kenda Klondike studded tires. They make a world of difference on ice and hard pack. That said, when leaning into a corner the studs can lose contact with the road, resulting in the bike sliding out from under you. It's not a fun experience.

Also, if your bike doesn't already have them but can mount them, you may want to think about switching to disc brakes. Rim brakes tend to not work so well when caked with ice and snow.