Glossary of Tire Terminology
Cold Tire PressureThe tire air
pressure when the vehicle has been
parked for at least three hours or
driven less than 1 mile (1.6 km).
Load Rating Means the maximum
load that a tire is rated to carry for a
given inflation pressure.
Maximum Inflation Pressure The
maximum tire air pressure that the
tire can hold.
Maximum Load Rating Means the
load rating for a tire at the maximum
permissible inflation pressure for thattire.
Recommended Inflation Pressure
The cold tire inflation pressure
recommended by the manufacturer.
Treadwear Indicators (TWI)
Means the projections within the
principal grooves designed to give a
visual indication of the degrees of
wear of the tread. Tire Pressure Monitoring System (TPMS)
Required Federal
Explanation
U.S. models only
Each tire, including the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recommended
by the vehicle manufacturer on the
vehicle placard or tire inflation
pressure label.
(If your vehicle has tires of a different
size than the size indicated on the
vehicle placard or tire inflation
pressure label, you should determine
the proper tire inflation pressure for
those tires.) As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS)
that illuminates a low tire pressuretelltale
when one or more of your tires is
significantly under-inflated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them to
the proper pressure.
Tire Labeling, Tire Pressure Monitoring System (TPMS)
Required Federal Explanation
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