Every tire found in North American markets has three sets of codes: tire specifications, DOT, and UTQG codes. The tire specification identifies tire and wheel size along with its speed and load indexes. The DOT code is mainly for the manufacturer, but it can help you determine your tire’s date of manufacture. Lastly, the UTQG codes showcase the various tire parameters such as treadwear, temperature and traction rating. You can learn in-depth about each tire code in our tire specification article.