well i had a tire emergency yesterday and had to replace the back one in a hurry, so now there's a vittoria on there. with the drum brakes, IGH, and esp the belt drive it took over an hour to replace with the help of a friend. I'm in no rush to swap a studded tire onto that anytime soon... i'll just put one on the front and take the train on really icy days.

thanks all for the good advice