Read inner and outer movement without reversing the signs
Separate centerline shift, width change and the reference plane used by each number.
Read the guide ↗Field guide / 02Compare nominal tire diameter and speed ratio
Understand exactly what follows from a size code and what still needs measurement.
Read the guide ↗Field guide / 03Record static gaps and save a reproducible scenario
Use measured inputs carefully and preserve the assumptions with the diagram.
Read the guide ↗