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JR
TIRES (Continued)
TIRE CHAINS
Refer to the owners manual supplied with the vehi-
cle to determine whether the use of tire chains is per-
mitted on this vehicle.
DESCRIPTION - RADIAL-PLY TIRES
Radial-ply tires improve handling, tread life and
ride quality, and decrease rolling resistance.
Radial-ply tires must always be used in sets of
four. Under no circumstances should they be used on
the front only. They may be mixed with temporary
spare tires when necessary. A maximum speed of 80
km/h (50 mph) is recommended while a temporary
spare is in use.
Radial-ply tires have the same load-carrying capac-
ity as other types of tires of the same size. They also
use the same recommended inflation pressures.
The use of oversized tires, either in the front or
rear of the vehicle, can cause vehicle drive train fail-
ure. This could also cause inaccurate wheel speed
signals when the vehicle is equipped with Antilock
Brakes.
The use of tires from different manufactures on the
same vehicle is NOT recommended. The proper tire
pressure should be maintained on all four tires.
DESCRIPTION - REPLACEMENT TIRES
WARNING: FAILURE TO EQUIP THE VEHICLE WITH
TIRES HAVING ADEQUATE SPEED CAPABILITY
CAN RESULT IN SUDDEN TIRE FAILURE.
WARNING:: IN ORDER TO MAINTAIN THE SPEED
CAPABILITY OF THE VEHICLE, REPLACEMENT
TIRES MUST HAVE SPEED RATINGS EQUAL TO OR
HIGHER THAN THOSE FITTED TO THE VEHICLE AS
ORIGINAL EQUIPMENT. IF TIRES WITH LOWER
SPEED RATINGS ARE FITTED, THE VEHICLE'S
HANDLING MAY BE AFFECTED AND THE SPEED
CAPABILITY OF THE VEHICLE MAY BE LOWERED
TO THE MAXIMUM SPEED CAPABILITY OF THE
REPLACEMENT TIRES. TO AVOID AN ACCIDENT
RESULTING IN SEVERE OR FATAL INJURY, CON-
SULT THE TIRE MANUFACTURER IN REGARDS TO
MAXIMUM SPEED RATINGS.
It is recommended that tires equivalent to the orig-
inal equipment tires be used when replacement is
needed.
Failure to use equivalent replacement tires may
adversely affect the safety and handling of the vehi-
cle.
The original equipment tires provide a proper com-
bination of many characteristics such as:
• Ride
• Noise
• Handling
• Durability
• Tread life
• Traction
• Rolling resistance
• Speed capability
The use of tires smaller than the minimum tire
size approved for the vehicle can result in tire over-
loading and failure.
Use tires that have the approved load rating for
the vehicle and never overload them. Failure to equip
the vehicle with tires having adequate speed capabil-
ity can result in sudden tire failure and loss of vehi-
cle control.
The use of oversize tires may cause interference
with vehicle components. Under extremes of suspen-
sion and steering travel, interference with vehicle
components may cause tire damage.
DESCRIPTION - SPARE TIRE (TEMPORARY)
The compact temporary spare tire is designed for
emergency use only. The original tire should be
repaired or replaced at the first opportunity, then
reinstalled. Do not exceed speeds of 80 km/h (50
mph) when using the temporary spare tire. Refer to
Owner's Manual for complete details.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - TIRE NOISE
Unusual tire noise can be associated with tire and
wheel vibration or irregular tire wear. For vibration,
(Refer to 22 - TIRES/WHEELS - DIAGNOSIS AND
TESTING). For irregular tire wear, (Refer to 22 -
TIRES/WHEELS/TIRES - DIAGNOSIS AND TEST-
ING).
DIAGNOSIS AND TESTING - TIRE/VEHICLE
LEAD
(Refer to 2 - SUSPENSION/WHEEL ALIGNMENT
- DIAGNOSIS AND TESTING)
DIAGNOSIS AND TESTING - TIRE WEAR
PATTERNS
Under inflation will cause wear on the shoulders of
tire. Over inflation will cause wear at the center of
tire.
Excessive camber causes the tire to run at an
angle to the road. One side of tread is then worn
more than the other (Fig. 14).
Excessive toe-in or toe-out causes wear on the
tread edges and a feathered effect across the tread
(Fig. 14).
TIRES/WHEELS
22 - 9
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