Decoding DOT-code
DOT:
Subgroup: SUMITOMO RUBBER INDUSTRIES LTD.

Factory name: SUMITOMO RUBBER INDUSTRIES, LTD.
City: MIYAKONOJO CITY
State (region): MIYAZAKI PREFECTURE
Country: JAPAN

Tire size: 225/50R17 (can vary)


DOT-code (DOT — Department Of Transportation) - tires certification according to requirements of US Department of Transportation. Marked on the side of the tire in the given format DOT XXXX XXXX XXXX and contains coded information about the factory, tire size and date of production.

DOT XXXX XXXX XXXX
Factory Code. The place where the tire was made.

DOT XXXX XXXX XXXX
Code size and tire design.

DOT XXXX XXXX XXXX
Manufacture encoding. It may contains information about a tire model and its features.
Some manufacturers do not use such coding.

DOT XXXX XXXX XXXX
Tire production date. The first two digits - a week, another two digits - the year of production.
Note: before 2000 tire production date was specified with three digits, the first two of which are designated the week of production, and the third digit - the year of production. Since 2000, using 4 digits, of which the third and fourth represent the year of production.


e.g.: DOT YL4V 3011


e.g.: N40A 5111

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