Tires can last up to 10 years, but the actual lifespan varies by how often they are used and the temperature and climate that they are driven in, as stated by Edmunds. The rubber that composes tires ages regardless of whether or not the tire is on a vehicle.
Tires that are driven in warm or coastal climates tend to age the fastest. Bumpy roads or a lot of scraping against pavement also shortens the tires' lifespan.
Since there are so many variables that affect how long tires last, consumers should watch the tread and condition of the tire to know when to replace them. Tires need to be changed when the tread is less than 4/32 of an inch. Any visible signs of damage, such as cracks or blisters, warrant an immediate replacement.