A tire date code is listed on the tire sidewall to indicate a tire's production year. The tire manufacture date is listed at the end of the U. Department of Transportation's safety code on the tire sidewall. The date code first lists the week the tire was manufactured and is followed by a number representing the year it was made. For instance, if it's labeled "" as shown in the graphic above, that means the tire was mass-produced during the third week of However, a tire made before usually features just one digit representing the year, meaning, for example, the number nine could represent either the years or
How To Read Your Tires
How to Read Tire Size and Sidewall Markings
Ever wonder what all those numbers on the sidewall of your tire actually mean? Click here to see the larger image. Width in millimeters — The first of the tire size numbers gives you the width of the tire from sidewall to sidewall in millimeters. If not, the tire is a European metric tire. The only difference between the two is a very slight one in terms of how load rating are calculated for the size, but the two are essentially interchangeable. Aspect Ratio — The aspect ratio designates the height of the tire, measured from the top edge of the rim to the top of the tire, as a percentage of the width. To use this ratio to find the standing height of the tire for sizing purposes, see Plus and Minus Sizing your Tires.
How to Read Your Tire
The condition of the tires on a car are what determines a car's capabilities in terms of acceleration, braking and cornering. 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.