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 (11⁄2) 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:
Wheel lug nut torque specifications
Retighten the lug nuts to the specified torque within 100 miles (160 km)
after any wheel disturbance (rotation, flat tire, wheel removal, etc.).
WARNING: When a wheel is installed, always remove ...
Improved performance without sacrificing fuel economy
Power for the 2011 Lincoln MKX is supplied by the 3.7-liter Duratec V-6,
which employs advanced technology and clever control strategies, such as Twin
Independent Variable Camshaft Timing (Ti-VCT) ...
Engine oil
...
