As a precaution, the Department of Transportation recommends changing even new-looking tires once they hit 10 years old, and many manufacturers recommend swapping them out at six years old.
Of course, this aging is highly dependent on where the tires live.
In February 2008, the owner of a 1998 Ford Explorer in Georgia needed a new tire for his SUV and ended up buying a used one.
When he was driving two weeks later, the tread suddenly separated from the tire.
Tires in hot dry climates have much shorter lives than those in moderate, moist climates.
The chronological age of any tire can be found on the tire sidewall by examining the characters following the symbol "DOT".Tires are just about the most important part of your car.If they're in bad shape, the car's ability to accelerate, stop, and turn in all conditions is greatly compromised.Older tires are substantially more likely to fail than newer ones.This is because tires are made mostly of rubber, and rubber degrades with age.