What Is a Dot Tire

Any tire used on U.S. highways/streets should have a DOT (Department of Transportation) mark. The DOT symbol certifies that the tire is compliant with the U.S. Department of Transportation’s safety standards. … The first two letters, FD, identify where the tire was produced.

Are DOT tires important?

The DOT requires tire manufacturers to stamp the code on each and every tire. The reason for the DOT code is, first and foremost, vehicle safety. For example, the code helps with safety by making it possible to track sales. This information is used to target the owners of tires in the event of a tire recall.

How old can a DOT tire be?

Some tire manufacturers cite 6 years, others recommend 10 years as the maximum service life for tires. tire identification number (TIN). The last four digits are the week and year of manufacture. Some older tires may have the TIN on the inside sidewall.