See also:

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 govern ...

Adjustable headrest (if so equipped)
WARNING: The adjustable headrests supplement the other vehicle safety systems. They may provide additional protection against injury in certain rear end collisions. Adjust the headrests prope ...

Going & Stopping
Base Altimas have a 2.5-liter four-cylinder engine that makes 175 horsepower (170 hp in states that have adopted California's emissions rules). A 270-hp, 3.5-liter V-6 is optional. A six-speed man ...