See also:

Tire tread
WARNING   Although the applicable federal motor vehicle safety laws consider a tire to be worn when the tread wear indicators (TWI) become visible at approximately 1/16 in (1.6 mm), we r ...

Example of operation
Initial situation You would like to switch from the vehicle function to the radio function and select a station from the station list, for example. The following operating example describes ...

DOT (Department of Transportation)
DOT marked tires fulfill the requirements of the United States Department of Transportation. ...