2015 Cadillac CTS Owner Manual - Page 308

Vehicle Care Caution (Continued) directly on the tires. Always inspect tires before use. See Tire Inspection on page 10-56. 10-45 criteria have a TPC specification code molded onto the sidewall. GM's TPC specifications meet or exceed all federal safety guidelines. (3) DOT (Department of Transportation): The Department of Transportation (DOT) code indicates that the tire is in compliance with the U.S. Department of Transportation Motor Vehicle Safety Standards. DOT Tire Date of Manufacture: The last four digits of the TIN indicate the tire manufactured date. The first two digits represent the week (01-52) and the last two digits, the year. For example, the third week of the year 2010 would have a four-digit DOT date of 0310. Tire Sidewall Labeling Useful information about a tire is molded into its sidewall. The examples show a typical passenger tire sidewall. Passenger (P-Metric) Tire Example (1) Tire Size: The tire size is a combination of letters and numbers used to define a particular tire's width, height, aspect ratio, construction type, and service description. See the "Tire Size" illustration later in this section for more detail. (2) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM's specific tire performance