Black plate (50,1)Cadillac SRX Owner Manual (Include Mex) - 201210-50 Vehicle CareTire Sidewall LabelingUseful information about a tireis molded into its sidewall.The examples show a typicalpassenger vehicle tire and acompact spare tire sidewall.Passenger (P‐Metric) Tire Example(A) 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” illustrationlater in this section for moredetail.(B) TPC Spec (TirePerformance CriteriaSpecification) : Originalequipment tires designed toGM's specific tire performancecriteria have a TPC specificationcode molded onto the sidewall.GM's TPC specifications meetor exceed all federal safetyguidelines.(C) DOT (Department ofTransportation) : TheDepartment of Transportation(DOT) code indicates that thetire is in compliance withthe U.S. Department ofTransportation Motor VehicleSafety Standards.(D) Tire Identification Number(TIN) : The letters and numbersfollowing the DOT (Departmentof Transportation) code arethe Tire 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.(E) Tire Ply Material : The typeof cord and number of plies inthe sidewall and under the tread.(F) Uniform Tire QualityGrading (UTQG) : Tiremanufacturers are requiredto grade tires based on threeperformance factors: treadwear,traction, and temperatureresistance. For more informationsee Uniform Tire QualityGrading on page 10‑67.(G) Maximum Cold InflationLoad Limit : Maximum loadthat can be carried and themaximum pressure needed tosupport that load.
