RAM Commercial ProMaster 2024, Руководство пользователя, Страница: 259 / 284

cantly from the norm due to variations
in driving habits, service practices, and
differences in road characteristics and
climate.
TRACTION GRADES
The Traction grades, from highest to
lowest, are AA, A, B, and C. These
grades represent the tire's ability to
stop on wet pavement, as measured
under controlled conditions on speci-
fied government test surfaces of
asphalt and concrete. A tire marked C
may have poor traction performance.
WARNING!
The traction grade assigned to this
tire is based on straight-ahead brak-
ing traction tests, and does not
include acceleration, cornering,
hydroplaning, or peak traction
characteristics.
TEMPERATURE GRADES
The Temperature grades are A (the
highest), B, and C, representing the
tire's resistance to the generation of
heat and its ability to dissipate heat,
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause
the material of the tire to degenerate
and reduce tire life, and excessive tem-
perature can lead to sudden tire fail-
ure. The grade C corresponds to a level
of performance, which all passenger
vehicle tires must meet under the Fed-
eral Motor Vehicle Safety Standard No.
109. Grades B and A represent higher
levels of performance on the labora-
tory test wheel, than the minimum
required by law.
WARNING!
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Exces-
sive speed, underinflation, or exces-
sive loading, either separately or in
combination, can cause heat buildup
and possible tire failure.
STORING THE VEHICLE
If you are storing your vehicle for more than 3 weeks,
we recommend that you take the following steps to
minimize the drain on your vehicle's battery:
•
Disconnect the negative cable from the battery.
•
Any time you store your vehicle or keep it out of ser-
vice (i.e., vacation) for two weeks or more, run the
air conditioning system at idle for about five minutes
in the fresh air and high blower setting prior to stor-
ing. This will ensure adequate system lubrication to
minimize the possibility of compressor damage
when the system is started again.
SERVICING AND MAINTENANCE 257
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