No problem on a very stable tourer, especially if it's (mostly) aluminum with fenders battling the elements, and salt. I changed from 32mm Conti Ultra Races to a new pair of WTB Cross Wolf 32mm tires. CX knobbies so not too lumpy/buzzy a ride at all, and at 55-60 PSI, take the snow and snow-ish stuff well. I don't mess with ice or icy-snow (the harder, packed version of snow) as I'm not looking to get another titanium elbow. We're slated for a good chunk of snowfall tomorrow through Saturday, which, if worse than five days ago, will freeze the city pretty good due to its extreme topography. I bought some beer, so I should be good for a couple of days...........
