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:
Weight-Distributing Hitch
A weight-distributing system works by applying leverage
through spring (load) bars. They are typically used
for heavier loads to distribute trailer tongue weight to the
tow vehicle’s front axl ...
Flowing/Rising Water
WARNING!
Do not drive on or across a road or path where water
is flowing and/or rising (as in storm run-off). Flowing
water can wear away the road or path’s surface
and cause your vehicle to ...
Frontal Area
The frontal area is the maximum height multiplied by the
maximum width of the front of a trailer. ...