The service life of a tire is dependent upon varying factors including, but not limited to:
WARNING!
Tires and the spare tire should be replaced after six years, regardless of the remaining tread. Failure to follow this warning can result in sudden tire failure. You could lose control and have a collision resulting in serious injury or death.
NOTE:
Wheel valve stem must be replaced as well when installing new tires due to wear and tear in existing tires.
Keep dismounted tires in a cool, dry place with as little exposure to light as possible. Protect tires from contact with oil, grease, and gasoline.
Tread Wear Indicators
Replacement TiresThe power door lock switches are located on each front door panel. Push the switch to lock or unlock the doors.

The driver’s door will unlock automatically if the keys are found inside the vehicle when the door lock button on the front door panel is used to lock the door. This will occur for two attempts. Upon the third attempt, the doors will lock even if the key is inside.