How To Check Tires
Tire pressures should be checked often. At least at every oil change. Be sure to inflate tires to the specification on the sticker on the inside of the drivers door.
Tires should be checked for abnormal wear patterns periodically. Just rub your hand around the tire and feel for roughness, flat spots, or feathering.
Diagram and Descriptions of Tire Wear
Tires should be rotated every 6,000-7,500 miles.
Tire Rotate Pattern
Check tire tread depth with this little gauge that can be purchased at any local parts store