Overview of Tire Quality Grading Standards

The Uniform Tire Quality Grading is a U.S.
Government requirement. Their purpose is to provide drivers with consistent and reliable information regarding tire performance. Tire manufacturers are required to grade tires using three performance factors: tread wear 1, tire traction 2, and temperature resistance 3. Although not a Government of Canada requirement, all tires made for sale in North America have these grades branded on the sidewall.
The actual values for tires are vehiclespecific
and may deviate from the values in
the illustration.
Where applicable, the tire grading information can be found on the tire sidewall between the tread shoulder and maximum tire width.
For example:

All passenger car tires must conform to the statutory safety requirements in addition to these grades.
See also:
Belt height adjustment
You can adjust the seat belt height on the
driver's seat and the front-passenger seat.
Adjust the height so that the upper part of the
seat belt is routed across the center of your
shoulder.
...
Automatic locking feature
The vehicle locks automatically when the
ignition is switched on and the wheels of the vehicle are turning at a speed of
more than
9 mph (15 km/h).
You could therefore be locked out when:
• th ...
Side impact air bags
WARNING
The pressure sensors for side impact air bag
control are located in the doors. Do not modify any components of the doors or
door
trim panels including, for example, the
addit ...
