Owner`s manual
ROUTINE MAINTENANCE
118
Ply separation—A parting of rubber compound between adjacent plies.
Pneumatic tire—A mechanical device made of rubber, chemicals, fabric and steel or other mate-
rials, that, when mounted on an automotive wheel, provides the traction and contains the gas or
uid that sustains the load.
Production options weight—e combined weight of those installed regular production options
weighing over 2.3 kilograms (5 lbs.) in excess of those standard items which they replace, not pre-
viously considered in curb weight or accessory weight, including heavy duty brakes, ride levelers,
roof rack, heavy duty battery, and special trim.
Radial ply tire—A pneumatic tire in which the ply cords that extend to the beads are laid at sub-
stantially 90 degrees to the centerline of the tread.
Recommended ination pressure—is is the ination pressure provided by the vehicle manu-
facturer on the Tire Information label and on the Certication/ VIN tag.
Reinforced tire—A tire designed to operate at higher loads and at higher ination pressures than
the corresponding standard tire.
Rim—A metal support for a tire or a tire and tube assembly upon which the tire beads are seated.
Rim diameter—is means the nominal diameter of the bead seat.
Rim size designation—is means the rim diameter and width.
Rim type designation—is means the industry of manufacturer’s designation for a rim by style or
code.
Rim width—is means the nominal distance between rim anges.
Section width—e linear distance between the exteriors of the sidewalls of an inated tire, ex-
cluding elevations due to labeling, decoration, or protective bands.
Sidewall—at portion of a tire between the tread and bead.
Sidewall separation—e parting of the rubber compound from the cord material in the sidewall.
Test rim—e rim on which a tire is tted for testing, and may be any rim listed as appropriate for
use with that tire.
Tread—at portion of a tire that comes into contact with the road.