Temperature A, B and C
The temperature grades A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law.

The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, under-inflation, or excessive loading, either separately or in combination, can cause heat build-up and possible tire failure.
See also:
Freeing a frozen door lock
To prevent a door lock from freezing, apply
deicer through the key hole. If the lock becomes
frozen, heat the key before inserting it into the
key hole or use the remote keyless entry keyfob. ...
Controls
Fan control dial
The fan control dial turns the fan on and off, and
controls fan speed.
Air flow control buttons
The air flow control buttons allow you to select
the air flow outlets.
MAX
A/C
...
The Inside
Even though its swoopy styling might suggest limited cabin space, the
five-seat Altima has sufficient room in both the front and rear seats. The
optional leather front bucket seats are comfortable ...
