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6-1. Specifications
tC_OM_OM21054U_(U)
Tire related term Meaning
Maximum load rating
The load rating for a tire at the maximum per-
missible inflation pressure for that tire
Maximum permissible
inflation pressure
The maximum cold inflation pressure to which
a tire may be inflated
Measuring rim
The rim on which a tire is fitted for physical
dimension requirements
Open splice
Any parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameter The overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of
the sidewalls of an inflated tire, including eleva-
tions due to labeling, decorations, or protective
bands or ribs
Passenger car tire
A tire intended for use on passenger cars, mul-
tipurpose passenger vehicles, and trucks, that
have a gross vehicle weight rating (GVWR) of
10,000 lb. or less.
Ply A layer of rubber-coated parallel cords
Ply separation
A parting of rubber compound between adja-
cent plies
Pneumatic tire
A mechanical device made of rubber, chemi-
cals, fabric and steel or other materials, that,
when mounted on an automotive wheel, pro-
vides the traction and contains the gas or fluid
that sustains the load
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