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:
Adding Equipment to Your Airbag-Equipped Vehicle
Q: Is there anything I might add to the front
or sides of the vehicle that could keep the
airbags from working properly?
A: Yes. If you add things that change your
vehicle’s frame, bumper system ...
Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this may
affect the way your vehicle performs, including its
braking, ride and handling charac ...
Starting the Engine
Place the transmission in the proper gear.
Notice: The engine is designed to work with the electronics in the vehicle. If
you add electrical parts or accessories, you could change the way the engin ...