See also:

Readiness for Inspection/Maintenance (I/M) test
A vehicle equipped with All-Wheel Drive (AWD) should never be tested using a two wheel dynamometer (such as the dynamometers used by some states for emissions testing), or similar equipment. Make ...

Increasing fuel economy
• Keep your engine tuned up. • Follow the recommended scheduled maintenance. • Keep the tires inflated to the correct pressure. Low tire pressure increases tire wear and lowers fuel econom ...

Traction AA, A, B and 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 ...