Speedometer error from tire circumference

Estimates actual speed and indicated-speed error after tire diameter change.

Calculates circumference from a supplied diameter.

Calculates wheel circumference from the supplied tire diameter.

Calculates the number of wheel revolutions required to travel one kilometer.

Calculates ride height change as half of the diameter difference between new and reference tires.

Calculates tangential tire contact force from wheel torque and rolling radius.