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Determining the Age of a Tire

posted on 2/11/2014 8:12:22 AM
When it comes to determining the age of a tire, it is easiest to identify when the tire was manufactured by reading its Tire Identification Number (often referred to as the tire’s serial number or DOT number). Unlike vehicle identification numbers (VINs) and the serial numbers used on many other consumer goods (which identify one specific item), Tire Identification Numbers are really batch codes that identify several components.
 
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 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 Since 2000-  Since the year 2000, the week and year the tire was produced has been provided by the last four digits of the Tire Identification Number.  Of those last four digits, the first two identify the week of the year that the tire was made while the last two identify the year itself.
 
Here is an example of a tire manufactured since 2000 with the current Tire Identification Number format:
 
DOT U2LL LMLR 5109
 
51 Manufactured during the 51st week of the year
 
09 Manufactured during 2009
 
While the entire Tire Identification Number is required to be branded onto one sidewall of every tire, current regulations also require that DOT and the first digits of the Tire Identification Number must also be branded onto the opposite sidewall. Therefore, it is possible to see a Tire Identification Number that appears incomplete and requires looking at the tire’s other sidewall to find the entire Tire Identification Number.
 
Tires Manufactured Before 2000- The Tire Identification Number for tires produced before the year 2000 was based on the assumption that tires would not be in service for ten years. While they were required to provide 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.
 
An example of a tire manufactured before 2000 with the earlier Tire Identification Number format:
 
DOT EJ8J DFM 328
 
32 Manufactured during the 32nd week of the year
 
8 Manufactured during the 8th year of the decade- i.e. 1998
 
While the previous Tire Identification Number format identified that a tire was built in the 8th year of a decade, there was no universal identifier that confirmed which decade (tires manufactured in the 1990s may have a small triangle following the Tire Identification Number to identify the decade).
 
When in doubt, you can also check your records or receipts. Most tire manufacturer's warranties cover their tires for four to five years from the date of purchase or five years from the week the tires were manufactured (This can and may differ from the different manufacturers). So if you purchase new tires that were manufactured exactly two years ago they will be covered for a total of six years (four years from the date of purchase) as long as you have your receipt. If you lose your receipt, your tires' warranty coverage will usually end five years from the week the tire was produced. 
Categories: Tires 101 | View Count: (25) | Return

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The GOODYEAR SPRING PROMOTION EVENT is a manufacturer’s mail-in rebate. This is a consumer tire rebate event for select Goodyear tires. To qualify for this event, you must purchase your eligible tires between March 11, 2024, and the expiry date of June 30, 2024. One mail-in rebate form per sales receipt/invoice. Limit one (1) mail-in or online rebate per qualifying purchase, per visit. Limit one (1) rebate form per tire purchase, per envelope. Limit four (4) rebates per individual consumer, per promotion period. Federal and provincial taxes are calculated on the selling price before the rebate. Purchase of a minimum of a set of four tires is required to receive the full rebate amount. Rebates are also available per tire on a prorated basis with a minimum purchase of four tires and a maximum purchase of six tires per sales receipt/invoice. The consumer must submit the rebate form online or fill out and mail the form along with a copy of the original sales receipt/invoice to the address printed on the form postmarked on or before July 31, 2024. Offer is only open to residents of Canada and is only valid for tire purchases from a participating Canadian retailer that operates a retail location in Canada. This mail-in rebate offer cannot be combined with any other Goodyear rebate offer. This is a consumer rebate that also applies to business-to-business purchases, excluding tires sold to national accounts, government accounts, P&R accounts, secondary supply points, other retailers or any other delivery for the account of Goodyear. All sales receipts/invoices submitted must include detailed product and customer sold-to information to be eligible for rebates. The participating retailer is solely responsible for determining the selling price of the tires without direction from Goodyear. Visit goodyear.ca or see a participating retailer for more details. 

Eligible Tires:: Get a $120 rebate with the purchase of: Assurance WeatherReady®, Assurance ComfortDrive,Eagle Exhilarate®, Wrangler Boulder MT and Wrangler DuraTrac® RT.

Get a $75 Rebate with the purchase of: Assurance MaxLife, Eagle Sport All-Season Family (includes ROF and SCT), Wrangler AT Adventure w/Kevlar, Wrangler DuraTrac, Wrangler Steadfast HT, Wrangler Workhorse AT, Wrangler Workhorse HT.

Additional terms and conditions: Goodyear reserves the right to substitute a cheque of equal value in lieu of a Goodyear Prepaid Mastercard or Virtual Account at its discretion. Fraudulent submissions will not be honoured and may be prosecuted. Goodyear is not responsible for non-complying rebate submissions or for lost, late, illegible, postage-due or undeliverable mail. Non-complying rebate submissions will not be honoured, acknowledged or returned. Void where taxed, restricted or prohibited by law. All decisions made by Goodyear (or its authorized representatives) relating to the validity of any submissions are final and binding. This promotion is subject to all federal, provincial, and local laws and regulations. Retain copies of the materials you submit. 

Tire rebate will be issued in the form of one (1) Goodyear Mastercard® Prepaid Card or Virtual Account. Card/Virtual Account is issued by Peoples Trust Company under licence from Mastercard International. Mastercard is a registered trademark, and the circles design is a trademark of Mastercard International Incorporated. No cash access or recurring payments. Card can be used where Mastercard is accepted. Virtual Account can be used online or for phone/mail orders where Mastercard is accepted. Card/Virtual Account valid for up to 6 months; unused funds will be forfeited after the valid thru date. Card terms and conditions apply. 

 Kevlar® is a registered trademark of E.I. du Pont de Nemours and Company. 

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