Cadillac 2010 CTS Sport Sedan Owner's Manual

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Vehicle Care 9-65Radial Ply Tire : A pneumatictire in which the ply cords thatextend to the beads are laid at90 degrees to the centerline ofthe tread.Rim : A metal support for a tireand upon which the tire beadsare seated.Sidewall : The portion of a tirebetween the tread and the bead.Speed Rating : Analphanumeric code assigned toa tire indicating the maximumspeed at which a tire canoperate.Traction : The friction betweenthe tire and the road surface.The amount of grip provided.Tread : The portion of a tirethat comes into contact withthe road.Treadwear Indicators : Narrowbands, sometimes called wearbars, that show across thetread of a tire when only 1.6 mm(1/16 inch) of tread remains.See When It Is Time for NewTires on page 9‑74 .UTQGS (Uniform Tire QualityGrading Standards) : A tireinformation system thatprovides consumers withratings for a tire's traction,temperature, and treadwear.Ratings are determined bytire manufacturers usinggovernment testing procedures.The ratings are molded into thesidewall of the tire. See UniformTire Quality Grading onpage 9‑78 .Vehicle Capacity Weight :The number of designatedseating positions multiplied by68 kg (150 lbs) plus the ratedcargo load. See Vehicle LoadLimits on page 8‑12 .Vehicle Maximum Load on theTire : Load on an individual tiredue to curb weight, accessoryweight, occupant weight, andcargo weight.Vehicle Placard : A labelpermanently attached to avehicle showing the vehicle'scapacity weight and theoriginal equipment tire sizeand recommended inflationpressure. See “Tire and LoadingInformation Label” under VehicleLoad Limits on page 8‑12 .