The main size
- 225 — nominal section width
- 45 — profile as a percentage of width
- R17 — radial construction and rim diameter
- 94Y — load and speed rating
Common extra markings
- XL — extra-load construction
- C — commercial or van application
- CP — camping or motorhome application
- 3PMSF — severe-snow marking
- Manufacturer-specific run-flat codes
Why close-looking is not enough
Changing width, profile, load or speed specification can affect clearance, handling and legal suitability. Confirm the full marking.