Rotating the tires on a regular basis will significantly extend their lifespan. The car's four tires wear out differently. If one tire wears out more than the others, the car will start pulling in the direction of the newer tires. For example, if you let go of the steering wheel when driving, (for a moment!), the car should continue to go in a straight line. If the tires have worn out differently, the car will not travel in a straight line. It will drift in the direction of the better tire. Rotating your tires will help even out tire wear by allowing each tire to serve in as many of the vehicle's wheel positions as possible.
Recommended intervals vary; AAA advises every 5,000 – 7,000 miles while Goodyear says every 3,000 – 6,000 miles. Check your vehicle’s owner’s manual for your vehicle manufacturer’s recommendation.
Remove tires and rotate front to back
Inspect tires for excessive wear
Reinstall lug nuts
Torque lug nuts to vehicle manufacturer specifications