Wheels and tires
Nissan Altima / Nissan Altima Owners Manual / Technical and consumer information / Specifications / Wheels and tires

See also:
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified
government test course. For example, a tire
graded 150 wou ...
If your vehicle overheats
If your vehicle is overheating (indicated by an
extremely high temperature gauge reading) or if
you feel a lack of engine power, detect abnormal
noise, etc., take the following steps.
WARNING:
...
Replacing spark plugs
Iridium-tipped spark plugs
It is not necessary to replace iridium-tipped (A)
spark plugs as frequently as conventional type
spark plugs because they last much longer. Follow
the maintenance l ...
