About Tire Calculator
How It Works
Our tire calculator helps you understand the implications of changing your tire size. It calculates important measurements including:
- Overall tire diameter
- Sidewall height
- Circumference
- Revolutions per mile
- Speedometer error
Understanding Tire Sizes
Tire sizes are represented in a format like 225/45R17, where:
- 225 is the tire width in millimeters
- 45 is the aspect ratio (height as a percentage of width)
- 17 is the wheel diameter in inches
Why Compare Tire Sizes?
Changing tire sizes can affect:
- Vehicle handling and performance
- Speedometer accuracy
- Ground clearance
- Overall driving experience