Tire Size Calculator
Compare two tire sizes side by side. See diameter, circumference, speedometer difference, and compatibility.
26.6Kuses
8.6/10(211)
Original Tire
225/45R17
New Tire
235/40R18
Understanding Tire Sizes
Tire sizes like 225/45R17 indicate width (225mm), aspect ratio (45%), and rim diameter (17 inches). Changing sizes affects speedometer accuracy, handling, and ride quality.
Features
- Side-by-side size comparison
- Speedometer correction factor
- Diameter and circumference calculation
- Revolutions per mile
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Disclaimer: This tool is provided as-is for informational and educational purposes only.