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

How to read tire size is complicated. Learn how to read tire size, use our tire size converter, or browse our tire size conversion charts.

Jan 14, 2026 · Learn how to read a tire size chart and compare tire sizes safely. A complete guide for drivers, DIYers, and off-road enthusiasts.

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 safety, comfort, …

Dec 19, 2025 · Car Talk tire experts take a look at how to read tire sizes. Read on for information explaining tire sizes, how they function, and how to quickly identify them.

Confused by the numbers on your sidewall? Learn how to read tire size, including width, aspect ratio, and rim diameter. Decode your tires in minutes!

Use our advanced tire size calculator to compare any two tire sizes, see exact diameter differences, speedometer error, and clearance requirements. Convert between metric millimeter width and …

Jun 29, 2023 · Tire sizes are defined by specifications such as the type, width, aspect ratio, speed rating, tire construction type, and service description. There are two organizations - Tire and Rim …

On this page I explain tire sizes, including how to find your tire size. The helpful tire size chart provided will tell you what tires fit.

While tires come in one shape, they come in many different sizes. Tire size is key to tire safety. Learn more about tire size here.