Michelin AXIOBIB Agricultural Tractor Tire
5 Picture AXIOBIB at work (5)
Agricultural tire sidewall markings identify important specifications, including tire dimensions, construction, load index and speed rating. Understanding these markings helps you identify your tire's specifications.
For example, the Michelin XEOBIB tire shown here displays the markings VF 650/60 R38 155D.
Michelin XEOBIB Agricultural Tire Sidewall
Le marquage d'un pneu agricole
Marking | What It Means |
|---|---|
XEOBIB | Michelin tire product line |
VF | Very High Flexion tire category |
650 | Nominal tire section width in millimeters |
60 | Aspect ratio: sidewall height as a percentage of nominal section width |
R | Radial tire construction |
38 | Nominal rim diameter in inches |
155 | Load index |
D | Speed index |
RADIAL | Indicates radial construction |
TUBELESS | Indicates the tire is designed for use without an inner tube |
Agricultural Tire Casing and Rim Measurements
Cotes dimensionnelles
Agricultural tire dimensions include measurements of the tire casing and rim. Understanding these measurements helps identify tire dimensions and interpret technical tire specifications.
The diagram illustrates the following measurements:
Symbol | Measurement |
|---|---|
S | Tire section width |
R′ | Static loaded radius |
R | Unloaded radius |
D | Overall diameter |
Ø | Rim diameter |
F | Rim width |
H | Suspension height |
Agricultural tires with different rim diameters and aspect ratios can have similar overall diameters. The diagram compares three 42-inch tire sizes with a 38-inch tire size to illustrate how tire dimensions relate.
Tire size | Rim diameter | Aspect ratio |
|---|---|---|
520/85 R42 | 42 inches | 85% |
620/70 R42 | 42 inches | 70% |
650/65 R42 | 42 inches | 65% |
710/70 R38 | 38 inches | 70% |
Agricultural Tire Size and Rim Diameter Comparison
The illustrated tires have an approximately equivalent overall diameter of 76.5 inches, despite differences in tire width, aspect ratio and rim diameter.
Actual tire dimensions and compatibility should be verified using the applicable manufacturer's technical specifications before selecting an alternative size.
Learn more about agriculture tire care, maintenance and performance with these Michelin resources:
• Choosing tractor tires to improving field traction
• Rotating your ag tires for tire longevity
• When is the right time to replace your tractor tires?
Find more Michelin resources, guidance and tire solutions for farm operations.
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