Rims too skinny for winter tires?
I'm currently commuting on a single speed road bike conversion. When I converted it I bought a new wheel set, and at the time wasn't really thinking about winter commuting, and got 700cx18c rims. I'd like to get some wider winter tires, but I'm not sure what width to get, or if I can get them. According to Sheldon Brown's tire sizing chart (if I'm reading it correctly) the widest tire I can fit should be a 37c? That seems really wide for the rims. What do you guys recommend I do?
Also if anyone has pictures of skinny rims, with bigger tires I'd like to see them.