Page 13 - michelin_GB

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Use and Maintenance Guide - MICHELIN
13
General information on earthmover tires
According to their aspect ratio
The wide diversity of earthmover machines and their uses requires the development of numerous ranges of tires.
Earthmover tires differ from those mounted on cars or commercial vehicles by:
• their size and weight;
• their tread depths are proportionally greater;
•more reinforcements to deal with the harsher conditions of use.
There are several families of earthmover tires, characterized by their aspect ratio H/S (ratio between the height of the sidewall
H and the section width of the tire S).
100 series
The H/S ratio is approximately 1.
65 series
The H/S ratio is approximately 0.65.
90 series
The H/S ratio is approximately 0.90.
80 series
The H/S ratio is approximately 0.80.
The section width is expressed in inches and hundredth
of inches.
Examples: 5.00 R 8, 18.00 R 33
Tires for rigid trucks, handling equipment, etc…
The section width is expressed as a whole number of inches or
a whole number of millimeters, followed by the number 65.
Examples: 35/65 R 33, 750/65 R 25
Tires for large loaders, articulated trucks, etc…
The section width is expressed as a whole number of inches
followed by the number 90.
Example: 50/90 R 57
Tires for rigid trucks
The section width is expressed in:
- Inches and fractions of inches
Examples: 8.25 R 15, 20.5 R 25
- Whole number of inches, followed by the number 80
Example: 59/80 R 63
Tires for rigid trucks, articulated dumpers, loaders, handling
equipment, etc…
H
S
H
S :100
H
S
H
S :80
H
S :100
H
S
H
S :80
H
S
H
S :65
H
S
H
S :90
H
S
H
S :80
H
S
H
S :65
H
S
H
S :100
H
S
H
S :80
H
S
H
S :65
Classification
of tires
Other series of tires are also available: 95 series, 75 series, etc...