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 one-half (1- 1/2) 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:
Cleaning the interior
Use a soft, damp cloth to clean the climate
control panel, audio equipment, instrument
panel, center console, combination
meter panel, and switches. (Do not use
organic solvents.) ...
Adverse safety consequences of under-inflation
Driving at high speeds with excessively low tire pressures can cause the tires
to flex severely and to rapidly become hot. A sharp increase in temperature could
cause tread separation, and failure ...
Exterior & Styling
Let's not mince words here: When it comes to styling, Subaru went off the
deep end a few years ago and brought us such gems as the B9 Tribeca — later
blandified — and a couple models whose grilles ...