Infiniti QX: 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 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.
Uniform tire quality grading
DOT (Department Of Transportation) Quality
Grades: All passenger car tires must
conform to federal safety requirements in
addition to these grades.
Quality grades can be found where applicable ...
Traction AA, A, B and C
The traction grades, from highest to lowest,
are AA, A, B and C. Those grades
represent the tire’s ability to stop on wet
pavement as measured under controlled
conditions on specified govern ...
See also:
Fog Lamps
For vehicles with fog lamps, they can be used for better vision in foggy or misty
conditions. The parking lamps and/or low-beam headlamps must be on for the fog lamps
to work.
The fog lamp button ...
Vehicle Identification Number (VIN)
...
Daytime Running Lamps (DRL)/Automatic Headlamp System
Daytime Running Lamps (DRL) can make it easier for others to see the front of
your vehicle during the day.
Fully functional daytime running lamps are required on all vehicles first sold
in Canada ...
