Understanding Your Sidewall & Other Tire Markings
The marking of a tire

- XeoBib range
- VF = Very High Flexion: a marking designating the tire category
- 650 – nominal section width
- 60 – sidewall height/nominal section of the tire
- R - Radial structure
- 38 – nominal diameter of the rim in inches
- 155 – load index rating: 3,875 kg
- D - speed code: 40 mph
- Radial - indication of the structure
- Tubeless – tire without inner tube
- Michelin® X® : trademarkXeoBib Gamme
The dimensional ribs of the envelope and the rim

Tire
- S – section width of an agricultural tire
- R’ – radius under static load*
- R – radius without load
- D – external diameter, equal to 2xR
- C.d.R. rolling circumference of the tire in dynamic mode* (dynamic measurement)
Rim
- F – internal width
- H – anchorage height
- Ø – diameter at seat (internal diameter of the tire)
Rims and valves references
Rims and valves references for agricultural tires
