Installed a pair of studded tires this weekend (Kenda Klondikes 40c, 100 studs) and rode on asphalt because the snow and ice have melted. Now I really want it to snow ... forecast says maybe Thursday. The semi-beefy tires look pretty cool on my road bike (see pics in winter cycling thread). I plan to keep them on into March. The ride is slightly rough but nothing compared to a set of knobby mtn. bike tires. It felt kind of slow and the commute seemed five minutes longer than usual (40 min.) but I'll have to do it a few more times to be sure about that.