i rode all last winter with 23's. i ended up taking the T to work once during a burly storm. there was one day when the sides of the road were so bad that i took up a lane. other than that it was fine, however this past winter didn't strike me as that snow. however, i do remember a couple bitterly cold days where i'm guessing my tire pressure went down a as it was in a bike cage. made the ride home kind of slow going.