Easy Way To Determine The Tire Size You Need For Your Vehicle

Reading the information on the sidewall of a tire can be helpful for understanding the size, type, and performance characteristics of the tire. Here's a guide on how to read the tire wall and understand the information it provides:

Tire Side Wall Explained

  1. Tire size: The tire size is indicated by a series of numbers and letters that are typically located at the beginning of the sidewall information. The tire size indicates the tire's width, aspect ratio, and diameter. For example, a tire size of "225/45R17" indicates a tire width of 225 millimeters, an aspect ratio of 45 (which refers to the height of the tire), and a diameter of 17 inches.

  2. Load carrying capacity: The maximum load carrying capacity of the tire is indicated by a number followed by the letters "Max Load" or "Max Load lbs." This indicates the maximum weight that the tire is capable of carrying when properly inflated.

  3. Speed rating: The tire's speed rating is indicated by a letter (such as "S" or "H") that corresponds to a specific maximum speed. The speed rating is based on the tire's ability to handle high speeds and is typically higher for performance tires.

  4. Tire type: The tire's type (such as "all-season," "summer," or "winter") is indicated by a series of letters or symbols. This information can help you choose the appropriate tire for the type of driving you do.

  5. UTQG rating: The Uniform Tire Quality Grade (UTQG) rating is a standardized system that rates tires based on their treadwear, traction, and temperature resistance. The treadwear rating is indicated by a number, while the traction and temperature resistance ratings are indicated by letters.

By understanding the information on the tire sidewall, you can make informed decisions about the type and size of tires that are best for your vehicle. We carry tires from reputable brands such as Mickey Thompson, Yokohama, and Toyo Tires. If you have any questions then our friendly support team is ready to help you. Simply give us a call at +1 (800) 921-0139 or drop us a note at support@autopartsusa.com