The tires that came on your vehicle have a number of markings. Those you should be aware of are described below.

Tire Size
Whenever tires are replaced, they should be replaced with tires of the same size. Below is an example of tire size with an explanation of what each component means.
P195/55R15 84H
P - Vehicle type (P indicates passenger vehicle).
195 - Tire width in millimeters.
55 - Aspect ratio (the tire’s section height as a percentage of its width).
R - Tire construction code (R indicates radial).
15 - Rim diameter in inches.
84 - Load index (a numerical code associated with the maximum load the tire can carry).
H - Speed symbol (an alphabetical code indicating the maximum speed rating
Tire Identification Number (TIN)
The tire identification number (TIN) is a group of numbers and letters that look like the following example.
TIN is located on the sidewall of the tire.
DOT B97R FW6X 2202
DOT - This indicates that the tire meets all requirements of the U.S. Department of Transportation.
B97R - This indicates that the tire meets all requirements of the U.S. Department of Transportation.
FW6X - Tire type code.

Audio Remote Controls
Steering Wheel Controls
Control basic audio system functions using the controls mounted on the
steering
wheel.
■MODE Button
Cycles through the audio modes as follows:
DISC mode appear ...
Place Phone Number
DEST button
►DEST Menu 2►Place Phone Number
Select a destination by phone number. Only phone numbers in the database are
recognized.
1. Enter the area code and phone
number. Select ...
Going Home
1 Press the DEST button.
2 Select Go Home 1.
Alternatively, you can say “Go
Home” from any screen. Your home
address is displayed on the Calculate
Route screen.
3 Select Set as Dest.
& ...