4x4 Metric to Inch Tire Size Converter
Upgrading your 4x4 tires is the first step to better off-road performance. However, converting metric tire sizes (like 285/70R17) to standard inches can be confusing. Use our precise calculator below to find the exact diameter of your tires in inches instantly.
Tire Size Calculator
How to read metric tire sizes?
Using the example 285/70R17:
- 285: The width of the tire in millimeters.
- 70: The aspect ratio (the sidewall height is 70% of the width).
- 17: The diameter of the wheel (rim) in inches.
Disclaimer: This tool uses standard mathematical formulas for theoretical tire dimensions. Actual manufactured tire sizes may vary slightly depending on the brand, tread pattern, and tire pressure. Always consult your vehicle's manual or a certified mechanic before making modifications.