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:
Tire Messages
SERVICE TIRE MONITOR SYSTEM
This message displays if there is a problem with the Tire Pressure Monitor
System (TPMS). See Tire Pressure Monitor Operation for more information.
TIRE LEARNING ACT ...
TPMS Malfunction Light and Message
The TPMS will not function properly if one or more of the TPMS sensors are
missing or inoperable. When the system detects a malfunction, the low tire
pressure warning light flashes for about one min ...
Engine Cooling When Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. See Engine Overheating. ...