Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9085354) - 2016 - crc - 7/30/15Vehicle Care 347Reset the Tire Pressure MonitorSystem. See Tire PressureMonitor Operation 0 342.Check that all wheel nuts areproperly tightened. See “WheelNut Torque” under Capacitiesand Specifications 0 394.{ WarningRust or dirt on a wheel, or on theparts to which it is fastened, canmake wheel nuts become looseafter time. The wheel could comeoff 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. See TireInspection 0 345 and Tire Rotation0 345.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 ifequipped, be replaced after sixyears, regardless of tread wear. Thetire manufacture date is the last fourdigits of the DOT Tire IdentificationNumber (TIN) which is molded intoone side of the tire sidewall. Thefirst two digits represent the week(01–52) and the last two digits, theyear. For example, the third week ofthe year 2010 would have afour-digit DOT date of 0310.Vehicle StorageTires age when stored normallymounted on a parked vehicle. Parka vehicle that will be stored for atleast a month in a cool, dry, cleanarea away from direct sunlight to
