For me, just about any tires worked for non-icy, packed snow. Even skinny 23's were ok (though not preferred). I was on a 20 mile ride last week on semi-knobbish tires (700x43), which I had zero issues with. Just about any MTB tire worked for me as well. I have Cont. T & C on my cargo bike and it works just fine right now (riding on some mostly dry, but with some snow patches).