Loading ...
Loading ...
Loading ...
186 SERVICING AND MAINTENANCE
Treadwear
The Treadwear grade is a comparative rating,
based on the wear rate of the tire when tested
under controlled conditions on a specified
government test course. For example, a tire
graded 150 would wear one and one-half times
as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their
use, however, and may depart significantly from
the norm due to variations in driving habits,
service practices, and differences in road char-
acteristics 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 spec-
ified government test surfaces of asphalt and
concrete. A tire marked C may have poor trac-
tion performance.
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 conditions
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 temperature can lead to
sudden tire failure. The grade C corresponds to
a level of performance, which all passenger
vehicle tires must meet under the Federal
Motor Vehicle Safety Standard No. 109. Grades
B and A represent higher levels of performance
on the laboratory test wheel, than the minimum
required by law.
STORING THE VEHICLE
If you are storing your vehicle for more than 21
days, 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 service (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 storing. This will
ensure adequate system lubrication to mini-
mize the possibility of compressor damage
when the system is started again.
WARNING!
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning, or peak traction
characteristics.
WARNING!
The temperature grade for this tire is
established for a tire that is properly inflated
and not overloaded. Excessive speed,
under-inflation, or excessive loading, either
separately or in combination, can cause heat
buildup and possible tire failure.
20_VF_OM_EN_US_t.book Page 186
Loading ...
Loading ...
Loading ...