Tire Size Converter & Comparator
Compare P-Metric tire dimensions side-by-side and see the differences.
This tool allows you to compare two P-Metric tire sizes (e.g., 225/45R17 vs 245/40R18) in detail. It calculates and displays key dimensions for each tire—such as overall diameter, section width, sidewall height, circumference, and revolutions per mile/km—and shows the difference between them. This is particularly useful when considering changing tire sizes, upsizing or 'plus sizing' wheels, or understanding how different tires might affect your vehicle's speedometer, gearing, and fitment. Always ensure any new tire size is compatible with your vehicle and local regulations.
- Enter the full P-Metric specifications for "Tire 1": Width (mm), Aspect Ratio (%), and Rim Diameter (inches).
- Enter the full P-Metric specifications for "Tire 2" using the same units.
- Click the "Calculate & Compare" button.
- The results table will display key dimensions for both tires and the difference between them, helping you understand how they compare.
All tools and information provided on TireCalculatorHub are for informational purposes only. Always consult with a qualified professional before making decisions about your vehicle's tires or modifications.
TireCalculatorHub is not liable for any damages or issues arising from the use of information or tools on this website.