What do the final four numbers in a Tire Identification Number (TIN) indicate?

The final four numbers in a Tire Identification Number (TIN) indicate the week and year the tire was manufactured. The first two of these four digits represent the specific week of the year the tire was made, while the last two digits represent the last two digits of the year. For example, if the final four digits are "2319," this would mean that the tire was manufactured during the 23rd week of the year 2019. This information is crucial for consumers and retailers, as it helps identify the age of the tire, which is an important factor for safety and efficacy. Understanding the date of manufacture allows users to ensure they are using tires that are safe and not too old, which can affect performance.

The other options do not accurately define the final four digits of a TIN. They pertain to different aspects of tire identification or specifications.