Treadwear
The treadwear grade is a comparative rating 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 a half (1½) 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.
See also:
Tires
To clean the tires, use a stiff brush with tire cleaner.
Notice: Using petroleum-based tire dressing
products on the vehicle may damage the paint finish
and/or tires. When applying a tire dressin ...
Following Distance
Stay at least twice as far behind the vehicle ahead as
you would when driving the vehicle without a trailer. This
can help to avoid situations that require heavy braking
and sudden turns. ...
Removing the Flat Tire and Installing the Spare Tire
This vehicle may have aluminum wheels with exposed wheel nuts. Use the wheel
wrench to loosen all the wheel nuts. Do not remove them yet.
Or, this vehicle may have steel wheels with plastic covers. ...