Metric Tire Size to Inches Converter
Convert metric tire sizes (like 225/45R17) to inches for overall diameter, section width, and sidewall height.
How It Works
Metric tire sizes use millimeters for width and a percentage for aspect ratio. To convert to inches:
- Width (in) = width (mm) ÷ 25.4
- Sidewall (in) = width × aspect / 2540
- Overall diameter (in) = (2 × sidewall) + rim diameter