||WHEELS AND TIRES
554
perature is normally reached after the vehicle
has been parked for at least 3 hours.
Related information
•
Tires (p. 550) Tire sidewall designations
The following information can be found on a
tire's sidewall. Federal law mandates that tire manufacturers
place standardized information on the sidewall of
all tires (see the illustration).
The vehicle has been certified with certain combi-
nations of wheels and tires.
The following information is listed on the tire
sidewall:
The tire designation:
NOTE Please be aware that the following tire desig-
nation is an example only and that this par-
ticular tire may not be available on your vehi-
cle.
1.
215: the width of the tire (in millimeters)
from sidewall edge to sidewall edge. The
larger the number, the wider the tire.
2. 65: The ratio of the tire's height to its width
in percent.
3. R: Radial tire (the designation RF and the symbol indicate that the vehicle is
equipped with optional self-supporting run
flat tires 3
.
4. 15: The diameter of the wheel rim (in
inches).
5. 95: The tire's load index. In this example, a
load index of 95 equals a maximum load of
1521 lbs (690 kg).
6. H: The tire's speed rating, or the maximum
speed at which the tire is designed to be
driven for extended periods of time, carrying
a permissible load for the vehicle, and with
correct inflation pressure. For example, H
indicates a speed rating of 210 km/h
(130 mph). 3
Self-supporting run flat tires may not be available on all models.
WHEELS AND TIRES
556Uniform Tire Quality Grading
ALL PASSENGER VEHICLE TIRES MUST
CONFORM TO FEDERAL SAFETY REQUIRE-
MENTS IN ADDITION TO THESE GRADES.
Quality grades can be found, where applica-
ble, on the tire sidewall between the tread
shoulder and maximum section width. For
example:
Treadwear 200 Traction AA Temperature A
TREADWEARThe treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course. For example, a tire graded
150 would wear one and one half (1 ½) 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 many depart significantly from the norm due
to variation in driving habits, maintenance practi-
ces and differences in road characteristics and
climate.
TRACTIONThe traction grades, from highest to lowest, are
AA, A, B, and C, as measured under controlled
conditions on specified 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 braking (straight-ahead) traction
tests and is not a measure of cornering (turn-
ing) traction.
TEMPERATUREThe 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 exces-
sive temperature can lead to sudden tire failure.
The grade C corresponds to a minimum level of
performance that all passenger vehicle tires must
meet under the Federal Motor Safety Standard
No. 109. Grades B and A represent higher levels
of performance on the laboratory test wheel than
the minimum required by law.
WARNING
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, under-infla-
tion, or excessive loading, either separately or
in combination, can cause heat buildup and
tire failure.
Related information
•
Tires (p. 550)
• Tire sidewall designations (p. 554)
||SPECIFICATIONS
658
Dimensions
mminches
I
Wheel track,
rear G 1667
H
1675 I 65.6
H
65.9 I
Wheel track,
rear J 1671
H
1679 I 65.8
H
66.1 I
J Load width, floor 1192 46.9
K Width 1923K
1931 L
1958 M 75.7
K
76.0 L
77.1 M
L Width incl. rearview mir-
rors 2140 84.3
M Width incl. folded rear-
view mirrors 2008 79.1A
At curb weight + 2 people. Varies slightly depending on tire
dimensions, chassis, etc.)
B Does not apply to vehicles with 4 seats.
C From the second row of seats in 7-seat models.*
D Vehicles with 4 seats.
E Vehicles with 5 seats.
F Vehicles with 7 seats.
G Vehicles without pneumatic suspension.
H Vehicles with 19-inch wheels.
I Vehicles with 20, 21 and 22-inch wheels.
J Vehicles with pneumatic suspension.
K Chassis width.
L Width for vehicles with 19-inch wheels.
M Width for vehicles with 20, 21 and 22-inch wheels.Related information
• Weights (p. 659)
