Understanding your agricultural tyre markings

Your MICHELIN tractor tyre markings from A to Z

With you, our MICHELIN farming experts identify all the markings on the sidewalls of your agricultural vehicle tyres. These precious details will help you make optimal use of your tyres.

Sidewall markings

XeoBib: Range was chosen for certain applications and vehicle types (e.g. harvesters)
VF = Very High Flexion: Prefix designating a standardised category of tyres - Tyres designed to bear 40% more load at the same pressure.
650: Nominal section width in mm
60: Aspect ratio (sidewall height/nominal section width) as a %
R: structure: “R” for radial, “-” for bias
38: Nominal diameter of the rim in inches
155: Standardised load index
D: Standardised speed index
Radial: Construction type.
RC = Rolling circumference in mm
E = Tyre section width in MM
Tubeless: Tyre without an inner tube
Michelin® X®: Trademark

IF= Improved Flexion: Prefix designating a standardised category of tyres- Tyres designed to bear 20% more load at the same pressure.

VF= Very High Flexion: Prefix designating a standardised category of tyres - Tyres designed to bear 40% more load at the same pressure.

PFO= Pressure Field Operation: ETRTO standard that enables tractor IF/VF tyres to bear a higher load at a lower speed. The PFO standard is an option that does not modify the tyre's initial LI/SI or CAI.

CFO/CFO+ = Cyclic Field Operation: Improved cyclic field operation. CFO= Tyres designed for cyclic load conditions. CFO+ = Tyres designed to provide additional load capacity in the field over 1.5 km maximum.

TL= Tubeless.

IMP= Implement: Tyre mainly designed for agro-food machinery or trailers. It can also equip the front steering wheels and drive wheels of farming tractors and forestry tractors but is not suited for sustained work at high torque.