Maintenance
328
Tires and wheels
5. Maximum permissible inflation
pressure
This number is the greatest amount
of air pressure that should be put in
the tire. Do not exceed the maxi
-
mum permissible inflation pressure.
Refer to the Tire and Loading Infor
-
mation label for recommended
inflation pressure.
6. Maximum load rating
This number indicates the maximum
load in kilograms and pounds that
can be carried by the tire. When
replacing the tires on the vehicle,
always use a tire that has the same
load rating as the factory installed
tire.
7. Uniform tire quality grading
Quality grades can be found where
applicable on the tire sidewall
between tread shoulder and maxi
-
mum section width.
For example:
䳜 TREADWEAR 200
䳜 TRACTION AA
䳜 TEMPERAT
URE A
Tires degrade over time, even when
th
ey are not being used. Regardless
of the remaining tread, we recom
-
mend that tires be replaced after
approximately six (6) years of nor
-
mal service. Heat caused by hot cli
-
mate or frequent high loading
conditions can accelerate the aging
process.
Tread wear
The tread wear grade is a compara
-
tive rating based on the wear rate
of the tire when tested under con
-
trolled conditions on a specified
government test course. For exam
-
ple, a tire graded 150 would wear
one-and-a-half times (1) as well
on the government course as a tire
graded 100.
The relative performance of tires
de
pe
nds 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 characteristics and climate.
These grades are molded on the
si
de
-walls of passenger vehicle
tires. The tires available as standard
or optional equipment on your vehi
-
cle may vary with respect to grade.
Traction - AA, A, B & C
The traction grades, from highest to
lowest, are AA, A, B and C. Those
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 traction perfor
-
mance.
The traction grade a
ssigned to this
tire is based on straight-ahead
braking traction tests, and does not
include acceleration, cornering,
hydroplaning, or peak traction char
-
acteristics.
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