How long does it usually take for your tires to get flat spots in them, you know when it has been sitting up for a while. What do you do if you do have flat spots, buy new ones.I ride below freezing a lot, and what you need to be conscious of are the same things to look out for when it's raining outside; i.e. paint stripes, manhole covers, oil spots...anything that can decrease traction. When the tires are cold, they aren't as "sticky" as when they are warm. However, with a little bit of riding, the tires will warm up and can be just as effective in cold, dry conditions as they are under warmer weather.