Motorcycle Tire Size Calculator
Calculate dimensions and specs for your motorcycle tires
Tire Size Guide:
• Metric (e.g., 120/70-17): Most common modern format
• Standard (e.g., 4.60-17): Traditional inch-based sizing
• Alphanumeric (e.g., MT90-17): Still used on some cruisers
Understanding the Numbers:
• Width: The tire's width in mm
• Aspect Ratio: Sidewall height as % of width
• Rim Diameter: The wheel diameter in inches
• Metric (e.g., 120/70-17): Most common modern format
• Standard (e.g., 4.60-17): Traditional inch-based sizing
• Alphanumeric (e.g., MT90-17): Still used on some cruisers
Understanding the Numbers:
• Width: The tire's width in mm
• Aspect Ratio: Sidewall height as % of width
• Rim Diameter: The wheel diameter in inches
Tire Specifications
Safety Note:
Always consult your manual and a professional mechanic before changing your tires. Incorrect sizes can affect handling and safety.