I mounted the studded tires last night and rode to lab to break them in a little. A balmy 15F outside right now! Didn't see any ice, but better safe than sorry if I'm going to ride after dark. You guys who say the studded tires are only a little slower, I call BS! I have the Nokian A10's, which are supposed to be "fast", but I feel like I'm pedaling through mud. But, as I said earlier, I guess it's okay, I needed the exercise.