Driving on aged tires significantly increases the likelihood of blowouts, tread separation, and accidents, particularly at higher speeds or in hot weather conditions where heat buildup is exacerbated. Decoding the DOT Code Structure The first two digits of the Department of Transportation (DOT) code represent the specific week of production, ranging from 01 to 52.
Check Date On Tires Decode Structure
For example, a code reading "DOT XXXX 3521" signifies the tire was built in the 35th week of 2021. The complete code is usually located on the inner edge of the sidewall, though it may be repeated on the outer side for visibility.
Relying solely on visual inspection or tread depth is insufficient for determining if a tire is safe for the road, as hidden deterioration poses a significant risk regardless of appearance. The subsequent two digits indicate the year the tire was made, showing the last two digits of the manufacturing year.
Check Date On Tires Decode Structure
Cracking on the sidewalls, known as "weather checking," indicates that the protective oils in the rubber have evaporated. During routine maintenance, asking a technician to check the DOT code provides valuable insight into the overall condition of the vehicle.
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