Black plate (43,1)Cadillac SRX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-7707476) - 2015 - crc - 9/5/14Vehicle Care 10-43Tire Sidewall LabelingUseful information about a tire ismolded into its sidewall. Theexamples show a typicalpassenger vehicle tire and acompact spare tire sidewall.Passenger (P-Metric) Tire Example(1) Tire Size : The tire size is acombination of letters andnumbers used to define aparticular tire's width, height,aspect ratio, construction type,and service description. See the“Tire Size” illustration later in thissection.(2) TPC Spec (TirePerformance CriteriaSpecification) : Originalequipment tires designed toGM's specific tire performancecriteria have a TPC specificationcode molded onto the sidewall.GM's TPC specifications meet orexceed all federal safetyguidelines.(3) DOT (Department ofTransportation) : TheDepartment of Transportation(DOT) code indicates that thetire is in compliance with theU.S. Department ofTransportation Motor VehicleSafety Standards.DOT Tire Date ofManufacture : The last fourdigits of the TIN indicate the tiremanufactured date. The first twodigits represent the week(01–52) and the last two digits,the year. For example, the thirdweek of the year 2010 wouldhave a four-digit DOT dateof 0310.(4) Tire Identification Number(TIN) : The letters and numbersfollowing the DOT (Departmentof Transportation) code are theTire Identification Number (TIN).The TIN shows themanufacturer and plant code,tire size, and date the tire wasmanufactured. The TIN ismolded onto both sides of thetire, although only one side mayhave the date of manufacture.(5) Tire Ply Material : The typeof cord and number of plies inthe sidewall and under the tread.(6) Uniform Tire QualityGrading (UTQG) : Tiremanufacturers are required tograde tires based on three
