Wheel and Tire Calculator

Understanding Wheel and Tire Dimensions

Proper wheel and tire sizing is crucial for vehicle performance, safety, and accuracy of your speedometer. The tire size format (e.g., 225/45R17) consists of:

• Tire Width (225): The width of the tire in millimeters from sidewall to sidewall.
• Aspect Ratio (45): The height of the tire's sidewall as a percentage of the width.
• Construction (R): Indicates Radial construction.
• Wheel Diameter (17): The diameter of the wheel in inches.

Why Tire Calculations Matter

Understanding your tire dimensions helps with:

• Ensuring proper fitment and clearance
• Maintaining accurate speedometer readings
• Optimizing vehicle performance
• Planning tire rotations and replacements