Service scope
TireCalc compares nominal geometry derived from metric radial size fields. It does not identify a vehicle or approve a replacement tire.
Data and storage
Tire sizes, speed values, dimensions, and results remain on this page. Optional analytics excludes every entered and derived number.
Calculation boundary
Nominal diameter and theoretical speed do not include load, pressure, wear, tolerance, clearance, load rating, speed rating, or vehicle calibration.
Responsibility
Use the vehicle placard and manual, manufacturer guidance, and a qualified tire professional before buying or installing a different size.
Questions: sympify.info@gmail.com