How do you read DOT codes on tires?

To read DOT codes on tires, locate the series of numbers and letters that start with "DOT" on the tire's sidewall. The first two letters identify the manufacturer and plant code, while the following characters indicate the tire's size and type. The last four digits represent the week and year of manufacture, with the first two digits indicating the week and the last two the year (e.g., "2319" means the tire was made in the 23rd week of 2019). Always check the DOT code to ensure your tires are within their recommended lifespan.