Most vehicle owners may believe that the right time to change their vehicle's tires is when they notice the usual signs of tread wear or cracks in the tire, or when the performance of the tires has reduced. But tires have a shelf life, which means that even if there's plenty of tread and the tire is undamaged, you will have to replace them eventually. Tires are composed of not just rubber but steel and textile cords that add strength to them, and as tires age, the cords or belts can lose their bonding with the rubber. Tire manufacturers recommend that tires be changed between six and 10 years, even if their usage is below the specified mileage limit. Michelin recommends that tires be inspected every year after the five-year mark to check for any visible signs of damage.