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 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:
Frequency Of Fluid Change
Under normal operating conditions, the fluid installed at
the factory will give satisfactory lubrication for the life of
the vehicle. Fluid changes are not necessary unless the
fluid becomes con ...
Engine Coolant Checks
Check the engine coolant (antifreeze) protection every 12 months (before the
onset of freezing weather, where applicable). If the engine coolant (antifreeze)
is dirty or rusty in appearance, the s ...
SAFETY
The 2011 Grand Cherokee has been named a Top Safety Pick by the Insurance
Institute for Highway Safety. To earn this safety nod, a car must receive the
top score of Good in front-, side-impact, re ...