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.
See also:
Safety
As of this writing, the 2011 QX56 hasn't been crash-tested.
Standard safety features include front and side-impact airbags, side-curtain
airbags for all three rows, an electronic stability system ...
Intelligent Key system
The Intelligent Key system can operate the ignition switch without it being taken out from your pocket or purse. The operating environment and/or conditions may affect the Intelligent Key system opera ...
Power steering fluid
Check the fluid level in the reservoir.
The fluid level should be checked when the fluid is cold at fluid temperatures of 32 to 86ºF (0 to 30ºC). The fluid level can be checked with the ...