IMPORTANT: There are a small number of categories, specifically consumable products, that have different expiration dates than the ones described above.
If you are in doubt, please contact Seller Support for details.
While this may just look like a confusing jumble, it's actually useful info. Department of Transportation (DOT), will tell you several things: The date of manufacture is the last four digits of the DOT code.
Look for a number that starts with the letters “DOT,” followed by a series of 10-12 characters. The first two digits are the week of manufacture, and the last two digits are the year.
If you look at the tires sidewall and see a DOT number that appears to be incomplete, that's because the DOT's current regulations require the entire number to be branded on only one sidewall, while the opposite sidewall is branded with just the first few digits.