I've also found out the hard way that ice can be painful. I think I fell down at least 5 times. In Iceland usually you ride the bike on the side walk (strange) I decided to get off the side walk to pass a group of people blocking my way on the walk and as soon as I got onto the street, down I went. It was humiliating.

The other times there weren't any people around but were just as painful. I even fell down with my violin on my back. Certainly not a smart thing to do when it costs more than a car.

The main problem here is that it doesn't snow that much so I don't want to bother with Nokians however you never know when you'll come across ice because it's always invisible black ice.