I'm not sure what your roads look like when it's winter but locally ours are covered in snow or ice. I have never gotten a flat with my Nokia 294's. Of course it could happen and I am prepared for it with C02, a pump, tools, patches and most importantly, extra clothing to keep me warm if I have to stop and change a tire at -20F, but with a coating of ice and snow on the road, the little bits that typically cause a flat are of no concern. I see a lot of riders in the winter that clearly have no spare clothing and would be in real trouble if they had to stop for 20 or 30 min. Removing a rear tire in sub zero temps can be a bit of a challenge...just keeping your hands warm enough to do what needs to be done....and swapping the tube (I have never tried to actually patch something at that temp..doubt it would work well) is not easy. So give good thought to what you need to really be prepared and keep your cell phone battery charged.