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 between tread shoulder and maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The quality grades apply to new pneumatic tires for use on passenger cars. However, they do not apply to deep tread, winter type snow tires, space-saver or temporary use spare tires, tires with nominal rim diameters of 12 inches or less, or to some limited production tires.
All passenger car tires must conform to Federal Safety Requirements in addition to these grades.
See also:
Tire pressures
WARNING
Driving at high speeds with excessively low tire pressures can cause the tires
to deform severely and to rapidly become hot. A sharp increase in temperature could
cause tread separation, ...
Braking when a tire is punctured
Do not depress the brake pedal suddenly when a tire is punctured. This could cause a loss of control of the vehicle. Keep driving straight ahead while gradually reducing speed. Then slowly pull off th ...
N (Neutral)
This position is for restarting a stalled
engine.
In this position the wheels and transmission
are not locked. In this position, the
transmission is neutral; the vehicle will roll
freely, eve ...
