Suzuki Aerio, Руководство пользователя

Страница: 182 / 232

9-29
INSPECTION AND MAINTENANCE
54G27-03E
Uniform Tire Quality Grading
The U.S. National Highway Traffic Safety
Administration has developed a grading
system for evaluating the performance of
passenger car tires. The following informa-
tion will help you understand the grading
system, which applies to vehicles sold in
the U.S. Consult your SUZUKI dealer or
tire retailer for help in choosing the correct
replacement tires for your vehicle.
Quality grades can be found where appli-
cable on the tire sidewall between tread
shoulder and maximum section width. For
example:
Treadwear 200 Traction AA Temperature
A
DOT Quality Grades
Treadwear
Traction AA A B C
Temperature A B C
All Passenger Car Tires Must Conform To
Federal Safety Requirements in Addition
To These Grades
Treadwear
The treadwear grade is a comparative rat-
ing 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 (1 1/2) 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 characteristics and climate.
Traction – AA, A, B, C
The traction grades, from highest to low-
est, are AA, A, B and C. Those grades rep-
resent the tire’s ability to stop on wet
pavement as measured under controlled
conditions on specified government test
surfaces of asphalt and concrete. A tire
marked C may have poor traction perfor-
mance.
Temperature – A, B, C
The temperature grades are A (the high-
est), B and C, representing the tire’s resis-
tance 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 tem-
perature 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
car 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.
Tire Rotation
54G573
To avoid uneven wear of your tires and to
prolong their life, rotate the tires as illus-
trated. Tires should be rotated as recom-
mended in the periodic maintenance
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 char-
acteristics.
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.
5-tire rotation 4-tire rotation
Tires: 6