Tire Size Calculator

Current Tire

Current Tire Code Vehicle Type Section Width (mm)
Aspect Ratio Construction
Wheel Diameter (inches)

New Tire

New Tire Code Vehicle Type Section Width (mm)
Aspect Ratio Construction
Wheel Diameter (inches)

Settings

Current Tire Dimensions

Section Height:

Overall Diameter:

Overall Radius:

Circumference:

Sidewall Height:

Revolutions per Mile:

Current Tire Calculation Steps

New Tire Dimensions

Section Height:

Overall Diameter:

Overall Radius:

Circumference:

Sidewall Height:

Revolutions per Mile:

New Tire Calculation Steps

Comparison

Diameter Difference:

Circumference Difference:

Revolutions per Mile Difference:

Speedometer Impact: