What Do the Numbers on Tires Mean?

Mechanic hand on tire and wheel

When it’s time to pick up a new set of tires in Springfield, it’s important to get just the right match for your vehicle. If you know how to read tire size information from your current set, you can save yourself some time at the dealership! In this guide, we’ll detail exactly how to translate the combination of numbers and letters written on your tires’ sidewalls. From wheel size to speed rating, we’ll help you decode tire numbers and their meaning like a pro.

Reading Tire Size Numbers & Symbols

So, what do the numbers on tires mean? Each tire has a code embedded into the surface to let you know vital information at a glance. But learning the tire number meaning can be a little confusing if you’re unfamiliar with the code. Let’s use “P215/65R15 95H” as an example:

  • P: The “P” indicates a “P-Metric tire” or one used for passenger vehicles. You might see “LT” for “light truck” or no letters at all, which indicates a European style or Euro-Metric tire.
  • 215: The “215” represents the tire width in millimeters from sidewall to sidewall, so 215 millimeters total.
  • 65: The “65” is the aspect ratio code or the height of the tire’s cross-section to its width. This tire has a height that is equal to 65% of the tire’s width.
  • R: This letter represents the tire’s construction, so “R” stands for “radial.”
  • 15: The “15” means the wheel size, so this tire is made for a 15-inch wheel.
  • 95H: This represents the load index and speed rating. The load index of “95” shows how much weight the tire can support, while the “H” represents how fast the tire can go from a range of A to Z. This tire can reach a maximum speed of 130 mph in Rochester.

Get More Help Finding the Right Tire Size at Green Dodge

Are you in need of a new set of tires around Decatur? Now that you know how to interpret tire number meaning, finding a new set at Green Dodge is simple. But if you have any questions, we’d be happy to help! Contact us in Springfield for more information, or find out all about our tire services.

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