Subaru Forester: Uniform tire quality grading standards / 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 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.
Uniform tire quality grading standards
This information indicates the relative
performance of passenger car
tires in the area of treadwear,
traction, and temperature resistance.
This is to aid the consumer
in making an informed choice in the
purchase of tires.
Quality grades can be found where
applicable on the tire sidewall betw..
TRACTION AA, A, B, 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
government test surfaces of
asphalt and concrete...
Other information:
Subaru Forester 2019-2026 Owners Manual: Operational conditions
The engine can be automatically stopped by the Auto Start Stop system when all of the following conditions are met. The engine is sufficiently warmed up. The engine hood is closed. The driver’s door is closed. The driver’s seatbelt is fastened...
Subaru Forester 2019-2026 Owners Manual: Tire replacement
The wheels and tires are important and integral parts of your vehicle’s design; they cannot be changed arbitrarily. The tires fitted as standard equipment are optimally matched to the characteristics of the vehicle and were selected to give the best possible combination of running performance, ride comfort, and service life...
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Average fuel consumption
This display shows the average rate of fuel consumption since the trip meter was last reset.
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