Maintenance
shop air dryers is strongly recommended to avoid moisture in
the high-pressure air used for tire inflation.
Underinflation
Tires should not be permitted to become underinflated.
Increased flexing due to underinflation causes heat buildup
within the tire components.
This leads to reduced strength,
breakdown of the rubber compounds, and possible separation
of the tire components (such as ply and tread separation and
reduced retreadability).
Underinflation is also the primary cause of blowouts. In addition,
low inflation causes an increase in rolling resistance. This results
in reduced fuel mileage, a loss in tread life, and uneven wear
due to increased tread movement. To determine proper inflation,
refer to the tire inflation range stated on the tire sidewall and the
tire manufacturer’s tire load-pressure charts.
Inspection
Check condition of tires for abnormal wear patterns and proper
inflation pressures. Cut or broken tire casing must be repaired
or replaced.
Tires should be inspected for the following conditions. If any are
present, the tire should be removed and repaired, retreaded, or
scrapped as the condition indicates.
•
Any blister, bump, or raised portion anywhere on the surface
of the tire tread or sidewall (other than a bump made by a
repair). These indicate the start of internal separation.
•
Any cut that reaches to the belt or ply cords or any cut that
is large enough to grow in size and depth.
•
Any nail or puncturing object.
•
If any stone or object is held by a tread groove and is starting
to drill into the tread base, remove the object.
Proper tire inflation, toe-in adjustment, loads, and road
speeds are important factors governing tire life, steering ease,
maneuverability, fuel economy, and ride quality.
Loads
WARNING
To prevent property damage, personal injury, and
/ or death, do not load tires beyond their rated
capacity as this decreases tire life, requiring
more frequent replacement of tires. Overloading
creates an unsafe condition that may result in
sudden air loss from a tire failure resulting in an
accident.
NOTE: The load rating of the tires installed on your vehicle
at the time of your vehicle’s production is at or in excess of
the Gross Axle Weight Rating (GAWR) generally found on
a label on the bulkhead above the driver. When replacing
tires, be sure that the replacement tire load rating (listed
separately in pounds and kilograms on the tire sidewall
for single or dual applications) multiplied by the number
of tires on that axle is equal to or higher than the specific
listed Steer Axle or Drive Axle GAWR. Failure to do so will
adversely affect maximum load-carrying capacity.
Tires
with the same size specification do not always have the
same load specification.
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Summary of Contents for BE Series
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