Tires should be checked at least twice a month, depending on how much you ride and how much pressure the tires require. Higher pressure tires lose air faster. To figure out how much pressure your tire requires, check the side of the tire! It might be hard to read because usually it’s printed in raised, vulcanized letters, but it’s on there. It will be listed as a range. In general, wider tires take lower pressure, like between 40 and 65 psi (pounds per square inch) and narrower tires take higher pressure, often between 80 and 120 psi. Be sure to at least keep your tires at the minimum; any lower, and you are at risk of a pinch flat!