Department Of Transportation Uniform Tire Quality Grades
The following tire grading categories were established by the National Highway Traffic Safety Administration. The specific grade rating assigned by the tire’s manufacturer in each category is shown on the sidewall of the tires on your vehicle.
All passenger car tires must conform to Federal safety requirements in addition to these grades.
See also:
Special Care
• If you drive on salted or dusty roads or if you drive
near the ocean, hose off the undercarriage at least once
a month.
• It is important that the drain holes in the lower edges
of the do ...
Air Bag Warning Light
You will want to have the air bags ready to
inflate for your protection in a collision. The
Air Bag Warning Light monitors the internal
circuits and interconnecting wiring associated
with ai ...
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 ...