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2. The outward facing sidewall of an asymmetrical tire
that has a particular side that must always face out-
ward when mounted on a vehicle.
• Rim : a metal support for a tire or a tire and tube
assembly upon which the tire beads are seated.
Tire Markings
Size Designation
EXAMPLE: P215/65R15
P
Passenger car tire size based on U.S.A. design
standards
215 Section width in milimeters (mm)
65 Aspect ratio in percent (%)
Ratio of section height to section width of tire.
R
Construction code
• ЉRЉ means radial construction.
• ЉDЉ means diagonal or bias construction.
15 Rim diameter in inches (in)
NOTE
:
•
European/Japanese metric tire sizing is based on
European/Japanese design standards. Tires designed
to these standards have the tire size molded into the
sidewall beginning with the section width. The letter
ЉPЉ is absent from this tire size designation. Example:
215/65R15 96H.
•
LT (Light Truck) -metric tire sizing is based on U.S.A.
design standards. The size designation for LT-metric
tires is the same as for P-metric tires except for the
M32A0100
MAINTENANCE 337
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