2003 Chevrolet Astro Owner's Manual - Page 282

Make sure the spare tire is stored securely. Push, pull, and then try to rotate or turn the tire. If it moves, use the ratchevwheel wrench to tighten the cable. See Changing a Flat Tire on page 5-71. The purpose Gf regular rotation is lo achieve more uniform wear for all tires on the vehicle. The first rotation is the most important. See "Part A: Scheduled Maintenance Services," in Section 6, for scheduled rotation intervals. After the tires have beenrotated, adjust the front and rear inflation pressures as shown onthe CertificationA-ire label. Make certain that all wheel nuts are properly tightened. See "Wheel NutTorque" under Capacities and Specifications on page 5-99. - Rust or dirt on a wheel, or on the part s to which it is fastened, can make wheel nuts become loose after a time.The wheel could come off and cause an accident. When you change a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, you can use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if you need to, to get all the rust or dirt off. See "Changing a Flat Tire" in the Index. When rotating your tires, always use the correct rotation patterns shown here. Don't include the compact spare tire in your tire rotation. 5-65