Black plate (50,1)Cadillac Escalade (Europe) Owner Manual - 2013 - CRC - 6/20/1210-50 Vehicle CareLightly coat the centre of thewheel hub with wheel bearinggrease after a wheel change ortyre 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 NewTyresFactors, such as maintenance,temperatures, driving speeds,vehicle loading, and road conditionsaffect the wear rate of the tyres.Tread wear indicators are one wayto tell when it is time for new tyres.Tread wear indicators appear whenthe tyres have only 1.6 mm (1/16 in)or less of tread remaining. Somecommercial truck tyres may nothave tread wear indicators. SeeTyre Inspection on page 10‑48 andTyre Rotation on page 10‑49 foradditional information.The rubber in tyres ages over time.This also applies to the spare tyre,if the vehicle has one, even if it isnever used. Multiple factorsincluding temperatures, loadingconditions, and inflation pressuremaintenance affect how fast ageingtakes place. GM recommends thattyres, including the spare ifequipped, be replaced after sixyears, regardless of tread wear. Thetyre manufacturer date is the lastfour digits of the DOT TyreIdentification Number (TIN) which ismoulded into one side of the tyresidewall. The first two digitsrepresent the week (01–52) and thelast two digits, the year. Forexample, the third week of the year2010 would have a four-digit DOTdate of 0310.Vehicle StorageTyres 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 toslow ageing. This area should befree of grease, gasoline or othersubstances that can deterioraterubber.