Metric / Inches Tire Size Calculator
With this tool, you can convert metric tires to the U.S. imperial system. Or you can convert from standard inches back to the metric system. So, why does the U.S. use an inferior measuring system? Because we're jackasses, that's why!
Metric Tire Size/ R
Example: 205 / 60 R 16
Imperial Tire Size (Inches)x -
Example: 35 x 12.50 - 16
Tire size codes using imperial format (inches) are easy to understand. For example, a 38x14.0-16 tire is 38 inches tall, 14 inches wide, and fits on a 16-inch rim. However, most tire codes are not in imperial format. If the tire is less than 35 inches in height, the tire code will most likely be stamped in metric format. This format is more difficult to comprehend. As an example, a tire size of 255 / 85 R 16 is 255 millimeters wide with a sidewall height of 85% of the width for a 16-inch rim.