Tire Size Calculator - Tire & Wheel Plus Sizing
To compare two tire sizes, select the sizes below, then activate ‘Compare Tire Sizes’. This will generate comparative information on diameter, radius, sidewall height, circumference, RPM and speedometer difference.
- Notes:
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- Tire diameters can vary slightly for each tire model. The listed diameters are from calculations based on the tire size.
- When changing tire sizes, we recommend staying within 3% of the diameter of the original tire. Any more than this and you face the risk of brake failure.
- This calculator is for information purposes only and we do not guarantee fitment based on this calculator alone.
You have a 2.31% difference in diameter. Your speedometer will be 2.26% too slow.