Tyre sizing

Tyre Size Calculator



STEP 1. Stock wheel/tyre: / R

[Current Rolling Radius: mm] [Current circumference: mm]


STEP 2. New wheel/tyre: / R

[New Rolling Radius: mm] [New circumference: mm]


STEP 3. The difference:  

Difference in circumference: mm or %

Speedometer: 100km/h

Actual speed: km/h


Wheel Size Calculator



Your tyre size: / R



x up to x