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CAUTION!
•
Install device as tightly as possible and then
retighten after driving about ½ mile (0.8 km).
Autosock traction devices do not require
retightening.
•
Do not exceed 30 mph (48 km/h).
•
Drive cautiously and avoid severe turns and large
bumps, especially with a loaded vehicle.
•
Do not drive for a prolonged period on dry
pavement.
•
Observe the traction device manufacturer’s
instructions on the method of installation,
operating speed, and conditions for use. Always
use the suggested operating speed of the device
manufacturer’s if it is less than 30 mph (48 km/h).
•
Do not use traction devices on a compact spare
tire.
TIRE ROTATION
RECOMMENDATIONS
The tires on the front and rear of your vehicle operate
at different loads and perform different steering, han-
dling, and braking functions. For these reasons, they
wear at unequal rates.
These effects can be reduced by timely rotation of tires.
The benefits of rotation are especially worthwhile with
aggressive tread designs such as those on On/Off Road
type tires. Rotation will increase tread life, help to main-
tain mud, snow, and wet traction levels, and contribute
to a smooth, quiet ride.
For the proper maintenance intervals
page 220.
The reasons for any rapid or unusual wear should be
corrected prior to rotation being performed.
The suggested rotation method is the “forward cross”
shown in the following diagram. This rotation pattern
does not apply to some directional tires that must not
be reversed.
CAUTION!
Proper operation of four-wheel drive vehicles depends
on tires of equal size, type and circumference on
each wheel. Any difference in tire size can cause
damage to the power transfer unit. Tire rotation
schedule should be followed to balance tire wear.
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES
The following tire grading categories
were established by the National High-
way Traffic Safety Administration. The
specific grade rating assigned by the
tire's manufacturer in each category is
shown on the sidewall of the tires on
your vehicle.
All passenger vehicle tires must con-
form to Federal safety requirements in
addition to these grades.
TREADWEAR
The Treadwear grade is a comparative
rating, based on the wear rate of the
tire when tested under controlled con-
ditions on a specified government test
course. For example, a tire graded
150 would wear one and one-half
times as well on the government
course as a tire graded 100. The rela-
tive performance of tires depends
upon the actual conditions of their
Tire Rotation (Forward Cross)
258 SERVICING AND MAINTENANCE
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