Tire Size Calculation

• Calculates tire size
• Displays tire radius, tire diameter, and tire circumference
• Tire revolutions per mile and per kilometer
• Lists dimensions for unloaded, static rolling, and dynamic rolling conditions
• Uses tire pressure for calculating rolling radius, rolling diameter, rolling circumference, and revs per distance
• Uses speed for calculating dynamic rolling radius, dynamic rolling diameter, dynamic rolling circumference, and dynamic revs per distance
• Lists other tire sizes with similar dimensions

Everything you need to know about your tire dimensions.

Enter tire section, aspect ratio, wheel diameter, tire pressure, and a road speed. Calculate unloaded dimensions, static rolling dimensions, dynamic rolling dimensions, and lists tires with similar diameters.

See also the tire selector calculation.