If your garage has more than one vehicle, you’ve probably taken on a fair share of automobile maintenance tasks—from oil changes to fixing a flat to changing light bulbs. But unless you’re trained to work on cars, you probably haven’t tackled the task of changing a tire because it can be tricky, dangerous, and hard to get everything just right. Plus, it can be really expensive. So, save yourself the headache and money. Pick up a good floor jack and get at that flat tire.