Tire manufacture dating
You will find the 4-digit date code following this set of letters and/or numbers. If your tire is older than 3-5 years, be sure to check the trailer tire for dry-rot as it may be time to replace your trailer tires. Please take a look at our Trailer Tire Options if it is time for your's to be replaced. This is a series of articles on the technical aspects of tires, their care and usage.The date code on this tire is 2511 which means it was produced in the 25th week of 2011.The date of manufacture is not indicated in the numbers you listed to the best of my knowledge.My primary purpose in these articles is to help people understand tires and thereby reduce the risks we all face every day..........since tires is just about the only thing I know about..........For example, the numbers 0410 means the fourth week of 2010.I took a photo of the DOT number and date code on a 480-8 tire, part # AM30000, that we have in stock for you, see link.
) So looking at the DOT code to the left - the plant code is "VW" = Sumitomo in Osaka, Japan - and the size code is "VK" = 255/50R16 (or maybe something else! The exact coding is up to the tire manufacturer - and is different between tire manufacturers.
Please drop me a note if you have a topic you want to see: [email protected] Tire Update April 2015: NHTSA (National Highway and Traffic Safety Administration), the branch of the US government that regulates tires (and in this case, what is required to appear on the sidewall), has annouced that they have run out of 2 digit plant codes (see below) and are making a change to a 3 digit plant code.