Ford 2001 Ranger, Manual

Page: 124 / 1218

204-04-3 204-04-3 Wheels and Tires
DESCRIPTION AND OPERATION (Continued)
Tire, Temporary Spare Tire and Wheel Runout
Excessive radial and lateral runout of a wheel and
CAUTION: Do not attempt to mount a
tire assembly can cause roughness, vibration, wheel
high-pressure spare tire on a regular wheel. The
tramp, tire wear and steering wheel tremor.
high-pressure spare tire is only to be mounted on
a high-pressure wheel. Limited service skin spare
Before checking runout, and to avoid false readings
tires are used with standard stamped steel
caused by temporary flat spots in the tires, check
wheels.
runout only after the vehicle has been driven far
enough to warm the tires. For additional
NOTE: Extended use of other than matching size
information, refer to Section 100-04 .
spare tires on a Traction-Lok

rear axle could
result in a permanent reduction in effectiveness.
This loss of effectiveness may be noticeable to the
driver as backlash and noise increase with worn
clutch plates.
The temporary spare tire is designed to provide a
lightweight, easy to use spare tire. It is for
emergency use only and has a maximum speed
capability of 80 km/h (50 mph).
To maximize tire performance, inspect for signs of
DIAGNOSIS AND TESTING
incorrect inflation and uneven wear, which may
Wheels and Tires
indicate a need for balancing, rotation, or front
Inspection and Verification
suspension alignment.
Correct tire pressure and driving techniques have an
WARNING: A vehicle equipped with a
important influence on tire life. Heavy cornering,
Traction-Lok

differential will always have both
excessively rapid acceleration and unnecessary sharp
wheels driving. If, while the vehicle is being
braking increases tire wear.
serviced, only one wheel is raised off the floor
and the rear axle is driven by the engine, the
Replacement tires must follow the recommended:
wheel on the floor could drive the vehicle off the
•
tire sizes.
stand or jack. Be sure both rear wheels are off
•
speed rating.
the floor.
•
load range.
WARNING: Never run the engine with one
wheel off the ground, for example, when
•
radial construction type.
changing a tire. The wheel(s) resting on the
Use of any other tire size or type can seriously
ground could cause the vehicle to move.
affect:
WARNING: Do not balance the wheels and
•
ride.
tires while they are mounted on the vehicle.
•
handling.
Possible tire disintegration or differential failure
•
speedometer/odometer calibration.
could result, causing personal injury and
extensive component damage. Use off-vehicle
•
vehicle ground clearance.
wheel and tire balancer only.
•
tire clearance between the body and chassis.
Be sure to follow the warnings when performing
•
wheel bearing life.
inspection and verification.
•
brake cooling.
Road Test
Verify the customer concern by performing a road
test on a smooth road. If any vibrations are
apparent, go to
Section 100-04 .
2001 Ranger EV, 01/2001