Things that puncture your tires will cause flats.But, a McCullom Lake winter can cause a flat tire, too.Maybe, when you pulled out of your McCullom Lake driveway, you ran over a nail. That would explain why you have a flat tire now. You could have run over a screw, a sharp piece of metal or any number of things that could puncture your tire. But maybe it was something else.As we all know, temperatures