What information can be found on a tire?

Learn how to read the codes and markings on your Ford tire's sidewall to understand its size, speed capability, load capacity, manufacturing date, and special features like Run Flat or Ford-specific design (Homologation).

The sidewall of your tire contains a wealth of information presented as codes and numbers. These markings are essential for identifying the tire's specifications, physical characteristics, and details about its production.

Key information includes:

1. Tire Size: A sequence of numbers and letters indicating the tire's width (mm), aspect ratio (sidewall height percentage), construction type (e.g., 'R' for Radial), and the diameter of the wheel rim it fits (inches).
2. Speed Rating: A letter code at the end of the size sequence, denoting the maximum speed the tire can safely sustain under specified conditions.
3. Load Index: A numerical code indicating the maximum weight a single tire is capable of supporting.
   Date of Manufacture: Identified by the 'DOT' mark, with the final four digits (often in a box) showing the week (first two digits, 1-52) and the year (last two digits) of production.
4. Reinforced: Markings like RF or REINF indicate the tire has an increased load capacity.
   Run Flat: Symbols such as RFT or SSR signify tires designed with reinforced sidewalls, allowing limited driving after a loss of pressure.
5. Homologation: Certain tires are specifically developed for particular vehicle manufacturers; tires designed for Ford vehicles often feature an 'FO' symbol, confirming they meet Ford's original equipment standards.

Understanding these markings helps you ensure your tires are correct for your vehicle and maintained properly for optimal safety and performance.