CTS V8-5.7L VIN P (2004)
Tires: Description and Operation
Tread Wear Indicators Description
The original equipment tires have tread wear indicators that show when you should replace the tires.
The location of these indicators are at 72 degree intervals around the outer diameter of the tire. The indicators appear as a 6 mm (0.25 inch) wide
band when the tire tread depth becomes 1.6 mm (2/32 inch).
Tire Inflation Description
This vehicle has been engineered to operate up to the stated load capacity with wheel and tire assemblies of the type, size, construction, and
configuration as originally installed. Maintenance of the tire inflation pressures is critical to the continued satisfactory performance, handling, and
operating economy of the vehicle. Operation with incorrectly or improperly inflated tires can adversely affect vehicle performance and may contribute
to the following:
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Reduced fuel economy
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Tire overloading
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Shortened tire life
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Excessive tire wear
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Uneven tire wear
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Vehicle handling concerns
Inspect the tire pressures when the vehicle has not been driven for at least 3 hours or not more than 1.6 km (1 mi) and when the tires are cool to the
touch.
Tire inflation pressures should be inspected monthly and before an extended trip and adjusted to meet the specifications listed for the particular
vehicle. Replace any missing or damaged tire valve stem extensions and/or caps to prevent the intrusion of water and contaminates.
One pound per square inch (psi) equals 6.9 kilopascals (kPa). The following table illustrates the conversion of kilopascals to pounds per square inch:
Inflation Pressure Conversion (Kilopascals to PSI)
For the correct inflation pressures refer to the vehicle's tire placard.
Tires inflated to a higher than recommended pressure can contribute to the following conditions:
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A hard ride
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Tire bruising
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Rapid tread wear at the center of the tire
Tires inflated to a lower than recommended pressure can contribute to the following conditions: