Decode Tire Part Numbers
AMP Tire sizes come in two formats — flotation and metric — both built from the same four facts
1. Tire Diameter
2. Section Width
3. Wheel Diameter
4. Tire Model
THE TWO SIZING SYSTEMS
AMP tires are sized either in flotation (inches) or metric (millimeters).
Both encode the same three measurements plus a model code — they’re just written differently.