225/45 R17 Tire Size Dimensions

A 225/45 R17 tire has an overall diameter of approximately 634 mm (24.96 in) and is widely used on sport sedans.

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How to use this tool

Enter tire width, aspect ratio and rim diameter in the fields above.
Results update instantly as you type — or click Calculate.
Read your overall diameter and the full breakdown beneath it.

Convert the 225/45 R17 tire size to metric and imperial dimensions including overall diameter and sidewall height.

Frequently asked questions

What does 205/55R16 mean?: 205 is the tire width in mm, 55 is the aspect ratio (sidewall as % of width), and 16 is the rim diameter in inches. Sidewall height = 205 × 0.55 = 112.75 mm.