How old is my Yokohama tire?
Type the dot date code from the Yokohama label to see when it was built.
Example
- DOTDOT: meets U.S. safety standards
- 147Plant: 147 = Yokohama Tire Manufacturing (Thailand) Co., Ltd., Amata City Industrial Park, Thailand
- ABCDEFManufacturer's code
- 44Week: 44 (October)
- 21Year: 21 = 2021
Built Week 44 of 2021 (around November)
4 years, 11 months old
Plenty of life left. Well inside the usual 6 to 10 year lifespan.
How this was read
- "DOT" means the tire meets U.S. federal safety standards. The tire identification number follows it.
- The first three symbols, 147, are the plant code. NHTSA lists it as Yokohama Tire Manufacturing (Thailand) Co., Ltd., Amata City Industrial Park, Thailand.
- The plant list names the company that runs the factory. It may build tires sold under other brands.
- The next 6 symbols are the manufacturer's own code for size and type. They are not part of the date.
- The last four digits, 4421, are the date code.
- The first two, 44, are the week. The last two, 21, are the year: 2021.
- Week 44 of 2021 runs from Sunday, October 31, 2021 to Saturday, November 6, 2021.
Format: DOT date code, week and year. Sources: 49 CFR 574.5, tire identification requirements (eCFR), NHTSA: Tires (how to find the tire age), Federal Register, 2015 rule on three-symbol plant codes, NHTSA vPIC tire plant code list.
Reading a Yokohama serial number
Yokohama tires carry the same DOT date code as every other brand sold in the U.S.
The date code is a week and year, like 2219 for week 22 of 2019. Read it on every tire, including the spare, since tires on one car often differ.
About Yokohama
- Yokohama made passenger and light truck tires in Salem, Virginia, from its 1989 purchase of Mohawk Rubber until the plant closed on March 18, 2026.
- Yokohama’s plant in West Point, Mississippi, makes truck and bus tires. It is the first plant Yokohama built in the U.S. and was planned to start in 2015.
- NHTSA lists code 1CC (CC on older tires) for Salem and 1FA for West Point.
Sources: Yokohama to Close Salem Plant on March 18, Signing ceremony held for Yokohama’s US plant, NHTSA vPIC: Get Equipment Plant Codes (tires, 2026)
DOT date code, week and year
Used july 2000 to today. Example: DOTU2LLLMLR5107
The date code is the last group of the DOT number on the sidewall. The first two digits are the week and the last two are the year, so 5107 means week 51 of 2007.
Worked example: DOT 147 ABCDEF 4421 was built Week 44 of 2021 (around November), so it is 4 years, 11 months old as of October 2026.
Sources: 49 CFR 574.5, tire identification requirements (eCFR), NHTSA: Tires (how to find the tire age), Federal Register, 2015 rule on three-symbol plant codes, NHTSA vPIC tire plant code list
Pre-2000 DOT date code, week and year digit
Used before July 2000. Example: DOTMJL9ABC218
Tires made before 2000 end the DOT number with three digits: the week, then the last digit of the year. Many 1990s tires add a small triangle after the code.
Worked example: DOT MJ L9 ABC 218 fits Week 21 of 1988 (around May) or Week 21 of 1998 (around May). The page above explains how to tell which.
| Code ends | Possible years |
|---|---|
| 218 with a triangle | 1998 |
| 218 with no triangle | 1988 or 1998 |
| xx0 with no triangle | 1980, 1990, or early 2000 |
Sources: Federal Register, 1999 rule moving to a four-digit date code, Vintage Tyres: reading tyre age codes, 49 CFR 574.5, tire identification requirements (eCFR)
Factories that make Yokohama tires
The two or three symbols right after "DOT" name the factory. These are the plant codes NHTSA lists for Yokohama. A code from this list on a Yokohama tire is a good sign it is genuine.
| Code | Location | Operator | Status |
|---|---|---|---|
| 147 (47) | Amata City Industrial Park, Thailand | Yokohama Tire Manufacturing (Thailand) Co., Ltd. | Listed |
| 1YM (YM) | Bahadurgarh Industrial Estate, distict Jhajjar, India | Yokohama India Private Ltd. | Listed |
| 14U (4U) | Clark Field, Philippines | Yokohama Tire Philippines Inc. | Listed |
| 1TK (TK) | Gryazi City, Russia | Yokohama R.P.Z. | Listed |
| 10V (0V) | Hangzhou, China | Hangzhou Qiantang Yokohama Tire Co., Ltd. (Chqy) | Listed |
| 1FC (FC) | Japan | The Yokohama Rubber Company, Ltd. | Listed |
| 1FD (FD) | Japan | The Yokohama Rubber Co., Ltd | Listed |
| 282 (8Z) | Onomichi, Japan | The Yokohama Rubber Co., Ltd. Onomichi Plant | Listed |
| 1CC (CC) | Salem, Virginia, United States | Yokohama Tire Corporation | Listed |
| 09K | Saltillo, Mexico | YOKOHAMA TIRE MANUFACTURING MEXICO SA de CV | Listed |
| 1JM (JM) | Suzhou, China | Suzhou Yokohama Tire Co., Ltd | Listed |
| 1FB (FB) | Wateri-Gun, Japan | The Yokohama Rubber Company, Ltd. | Listed |
| 1FA (FA) | West Point, Mississippi, United States | Yokohama Tire Manufacturing Mississippi, LLC | Listed |
| 020 | West Point, Mississippi, United States | Yokohama Tire Manufacturer, LLC | Closed |
Old two-symbol codes are in brackets. Source: NHTSA vPIC tire plant codes, checked October 2026.