1993 GMC Safari Owner's Manual - Page 285
1993 GMC Safari Manual
Page 285 highlights
Tire Inspection and Rotation To makeyourtireslastlonger,havetheminspectedandrotatedatthe mileagesrecommendedintheMaintenanceSchedule.See"Scheduled MaintenanceServices" in theIndex. RECOMMENDED ROTATIONPATTERN FRONT Read"InspectionandRotation" Textfor AdditionalInformation on TireRotation. Do Not Include "Temporary UseOnly" CompactSpareTire In Rotation. Usethisrotationpattern. If yourvehiclehasfronttireswithdifferentloadratingsortreaddesigns(such asallseasonvs.on/offroad)thanthereartires,don'trotateyourtiresfront to rear. Afterthetireshavebeenrotated,adjustthefrontandrearinflationpressure asshownontheCertification/Tirelabel.Makecertainthatallwheelnutsare properlytightened.See"WheelNutTorque"intheIndex. CAUTION I A Rust ordirtonawheel,orontheparts to which it isfastened,can makewheelnutsbecomelooseafteratime.Thewheelcouldcome off andcauseanaccident.Whenyouchangeawheel,remove any rustordirtfromplaceswherethewheelattachestothevehicle.In a cloth orpapertowel to do this; butbe anemergency,youcanuse if youneed to, togetall suretouseascraperorwirebrushlater, therustordirtoff.(See"ChangingaFlatTire"intheIndex.) 6-47