300 Vehicle CareUse this rotation pattern whenrotating the tires.Do not include the spare tire inthe tire rotation.Adjust the front and rear tires tothe recommended inflationpressure on the Tire andLoading Information label afterthe tires have been rotated. SeeTire Pressure 0 293 and VehicleLoad Limits 0 196.Reset the Tire Pressure MonitorSystem. See Tire PressureMonitor Operation 0 296.Check that all wheel nuts areproperly tightened. See “WheelNut Torque” under Capacitiesand Specifications 0 342.{ WarningRust or dirt on a wheel, or on theparts to which it is fastened, canmake wheel nuts become looseafter time. The wheel could come(Continued)Warning (Continued)off and cause an accident. Whenchanging a wheel, remove anyrust or dirt from places where thewheel attaches to the vehicle. Inan emergency, a cloth or a papertowel can be used; however, usea scraper or wire brush later toremove all rust or dirt.Lightly coat the center of thewheel hub with wheel bearinggrease after a wheel change ortire rotation to prevent corrosionor rust build-up. Do not getgrease on the flat wheelmounting surface or on thewheel nuts or bolts.When It Is Time for NewTiresFactors, such as maintenance,temperatures, driving speeds,vehicle loading, and road conditionsaffect the wear rate of the tires.Treadwear indicators are one way totell when it is time for new tires.Treadwear indicators appear whenthe tires have only 1.6 mm (1/16 in)or less of tread remaining. Somecommercial truck tires may not havetreadwear indicators. See TireInspection 0 299 and Tire Rotation0 299 for additional information.The rubber in tires ages over time.This also applies to the spare tire,if the vehicle has one, even if it isnever used. Multiple factorsincluding temperatures, loadingconditions, and inflation pressuremaintenance affect how fast agingtakes place. GM recommends thattires, including the spare if
