Automotive
Rolling radius from tire diameter
Estimates rolling radius as half of the supplied tire diameter.
Related calculators
Tire circumference
Calculates circumference from a supplied diameter.
Tire overall diameter
Calculates tire overall diameter from width, aspect ratio, and rim diameter.
Wheel circumference from diameter
Calculates wheel circumference from the supplied tire diameter.
Ride height change from tire diameter
Calculates ride height change as half of the diameter difference between new and reference tires.
Speedometer error from tire change
Estimates actual speed and indicated-speed error after tire diameter change.
Speedometer error from tire circumference
Estimates percentage speedometer error after tire circumference change.