How to CheckUse a good quality pocket-type gauge to checktire pressure. You cannot tell if your tires areproperly inflated simply by looking at them.Radial tires may look properly inflated evenwhen they are under‐inflated. Check the tire'sinflation pressure when the tires are cold.Cold means your vehicle has been sitting forat least three hours or driven no more than1 mile (1.6 km).Remove the valve cap from the tire valve stem.Press the tire gauge firmly onto the valve to geta pressure measurement. If the cold tire inflationpressure matches the recommended pressure onthe Tire and Loading Information label, no furtheradjustment is necessary. If the inflation pressureis low, add air until you reach the recommendedamount.If you overfill the tire, release air by pushing onthe metal stem in the center of the tire valve.Re‐check the tire pressure with the tire gauge.Be sure to put the valve caps back on the valvestems. They help prevent leaks by keeping outdirt and moisture.Professional VehicleThe proper inflation of the tires on yourprofessional vehicle depends on the type oftires on it.. If your vehicle has P235/60R17 size tires, thecold inflation pressure is 41 psi (284 kPa).. If your vehicle has LT235/60R17E size tires,the cold inflation pressure depends on thevehicle mass and should be determined bythe vehicle coach‐builder. A Tire and LoadingInformation label provided by the final stagemanufacturer should be attached to theB‐pillar on the driver's side of the vehicle.If the final stage manufacturer's label isnot present, the coach‐builder should beconsulted. Do not use the tire pressuresindicated on the General Motors label.These tire pressures are for the incompletevehicle and are not the correct tire pressuresfor the completed professional vehicle.Operation at inflation pressures below thisrecommendation may cause your tires to becomeoverloaded.6-60InformationProvidedby:
