Uniform tire quality grading
DOT (Department Of Transportation) Quality Grades: All passenger car tires must conform to federal safety requirements in addition to these grades.
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
See also:
Reporting safety defects
For USA
If you believe that your vehicle has a defect which could cause a crash or could
cause injury or death, you should immediately inform the National Highway Traffic
Safety Administration (N ...
Car phone or CB radio
When installing a car phone or a CB radio in
your vehicle, be sure to observe the following
cautions, otherwise the new equipment may
adversely affect the electronic control modules
and electronic ...
Meters and gauges
Basic Information
Tachometer, used to show engine speed in revolutions per minute so the driver can monitor how the engine is
operating.
Vehicle information display, which prese ...