The rubber on a car tire degrades over time, and tire warranties can be tied to manufacturing dates.

Every tire sold in the United States has a date code stamped on it. If the last two digits are 07, for example, the tire was manufactured in 2007.

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.

So if you purchase new tires that were manufactured exactly two years ago they will be covered for a total of six years (four years from the date of purchase) as long as you have your receipt.

If you lose your receipt, your tires' warranty coverage will end five years from the week the tire was produced (resulting in the tire manufacturer's warranty coverage ending only three years from the date of purchase in this example).

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.

In the image below we see the 07, indicating the tire was build in 2007.

This particular tire was made the 35 At Tires-easy we consider the tire warranty to begin from the date of purchase, not the DOT Date Code.

Everybody knows to replace tires when the tread gets down to the wear bar, but what about when they get too old?

The rubber in tires deteriorates over time due to UV and environmental exposure.

The date code will let you know when tires need to be replaced. The two digits before the year indicate the week of the year that the tires were manufactured.