What Does Tire Size Mean

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What Does Tire Size Mean
Related Categories: What Does The Numbers Mean | Can I Change My Tire Size | Changing Tire Sizes | Odometer | What Tires Will Fit My Car | Speedometer Difference | What Is Backspacing | What Size Custom Wheels Will Fit My Car | Torque Chart | Changing Rim Size

  • …wheels? * How do you know what wheel fits my vehicle? * What does offset mean? How does it relate to backspacing? * What is the purpose of centering rings? Are they required? * Why do I need to re-torque the lug hardware on new wheels? * What happens if I don't buy Tire Pressure Monitoring System…

  • What Does the UTQG Rating Mean?

  • …shopping for tires the rating of most interest to consumers is the UTQG. However, this is also the rating with the least amount of consistency among manufacturers. It's important to realize that the Department of Transportation does not conduct these tests. The UTQG ratings are assigned by the tire manufacturers…

  • What Does 'XL' Stand For?

  • …different size. When talking about tires, XL really means extra load. These tires can use higher air pressure to support more weight than a standard tire of the same size. If you want to see whether your current tires are standard or extra load, you can check the service description on the tire's sidewall…

  • What's in a letter?

  • T, Z, W...These letters appear on a tire, but what do they mean? Speed ratings can be a little confusing. I get many calls like this one: "I have an 08 BMW 328i and I need a Z-rated tire." To be honest, Z-rated used to mean a lot more than it does now. When speed ratings first came out, Z was thought…

  • What Does "ZR" Mean?

  • Tire sizes have letters in them, but they don't always have the same letters. You're probably familiar with the "P" or the "LT" that sometimes shows up at the beginning of the size, and the "R" right before the wheel size, for example P245/40R18 or LT315/70R17. But what does it mean when the tire says…


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