Wear Indicators
The groove where the wear indicator is located is 1/16 inch (1.6 mm) shallower than elsewhere on the tire. If the tread has worn so that the indicator is exposed, replace the tire. Worn out tires have poor traction on wet roads.
See also:
Carbon Monoxide Hazard
Your vehicle’s exhaust contains carbon monoxide gas. Carbon monoxide should not
enter the vehicle in normal driving if you maintain your vehicle properly and follow
the information on this page. ...
Maintenance Items Under the Hood
4-cylinder models
6-cylinder models
...
Tire Pressure Monitoring System (TPMS) -Required Federal Explanation
Each tire, including the spare (if provided), should be checked
monthly when cold and inflated to the inflation pressure
recommended by the vehicle manufacturer on the vehicle placard
or tire infla ...