See also:

Tire labeling
Many markings (e.g. Tire size, Tire Identification Number or TIN) are placed on the sidewall of a tire by tire manufacturers. These marking can provide you with useful information on the tire. ...

Traction AA, A, B, 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 test ...

SCAN (only when connecting USB storage device)
Scan is operated in the same way a CD is played. For details, refer to “Scan”. NOTE When an iPod® is connected, you cannot select the SCAN mode. ...