Use our tire size calculator to calculate the diameter, width, sidewall, circumference, and revolutions per mile of any tire. Just type in a metric or standard size tire and click calculate.

Everything you need to know about tire sizes and how to understand what the numbers on the sidewall mean. See our helpful sizing charts.

Dec 30, 2025 · The numbers on a tire's sidewall provide information about its size, manufacture date, load rating, speed rating, and maximum pressure levels.

Use our tire size calculator or tire size chart to do a quick side-by-side tire size comparison. If you plan on upsizing or downsizing your tires, our tire calculator can help you make sure you get …

May 17, 2025 · Learn how to decode tire size numbers like a pro. This 2025 beginner’s guide explains each part of the tire code, how to choose the right size, and how tire size affects …

If you’re unsure of how to read tire measurements from your tire walls, the information and graphics below will tell you how to read tire size, understand and interpret it.

Master tire size measurement with our comprehensive guide. Learn to measure tire width, diameter, sidewall height, and aspect ratio using professional techniques. Includes tire …

Feb 26, 2025 · Wondering how tire sizes work? This article gives you an in-depth discussion on tire size specifications and why they’re important.

With a little explanation it's easy to understand what all of the letters and numbers mean on your tire's sidewall. The numbers are indicators of the size, type, and performance of the tire. Enter …

Mar 26, 2025 · Tire size refers to the specific dimensions and capabilities of a tire, which are indicated by a combination of numbers and letters found on the sidewall. These markings …