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Ford Truck Club Forum > GARAGE TALK > Garage Talk: Wheels & Tires



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Old January 8th, 2012, 01:21 AM
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HawaiianF150 HawaiianF150 is offline
 

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Default Determining Your Tire's Manufacture Date

DETERMINING TIRE MANUFACTURE DATE

Refer to the attachments below.

The U.S. Department of Transportation (DOT) National Highway Traffic Safety Administration (NHTSA) requires that Tire Identification Numbers be a combination of the letters DOT, followed by ten, eleven or twelve letters and/or numbers that identify the manufacturing location, tire size and manufacturer's code, along with the week and year the tire was manufactured.

Tires Manufactured 2000 and Later...

Since 2000, the week and year the tire was produced has been provided by the last four digits of the Tire Identification Number with the 2 digits being used to identify the week immediately preceding the 2 digits used to identify the year.

DOT U2LL LMLR 5107 - Manufactured during the 51st week of the year
DOT U2LL LMLR 5107 - Manufactured during 2007

Tires Manufactured Before 2000...

The Tire Identification Number for tires produced prior to 2000 was based on the assumption that tires would not be in service for ten years.

While they were required to provided the same information as today’s tires, the week and year the tire was produced was contained in the last three digits. The 2 digits used to identify the week a tire was manufactured immediately preceded a single digit used to identify the year.

DOT EJ8J DFM 408 - Manufactured during the 40th week of the year DOT EJ8J DFM 408 - Manufactured during the 8th year of the decade.
*** Tires produced in the 1990s may have a small triangle following the Tire Identification Number to identify the decade.***
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Last edited by HawaiianF150; January 8th, 2012 at 01:31 AM.


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