CTS V6-3.2L VIN N (2003)
Tires: Description and Operation
Description and Operation
General Description The factory installed tires are designed in order to operate satisfactorily with loads up to and including the full rated load capacity
when these tires are inflated to the recommended pressures.
The following factors have an important influence on tire life:
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Correct tire pressures
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Correct wheel alignment
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Proper driving techniques
The following factors increase tire wear:
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Heavy cornering
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Excessively rapid acceleration
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Heavy braking
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).
Metric Wheel Nuts and Bolts Description
Metric wheel/nuts and bolts are identified in the following way:
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The wheel/nut has the word Metric stamped on the face.
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The letter M is stamped on the end of the wheel bolt.
The thread sizes of metric wheel/nuts and the bolts are indicated by the following example: M12 x 1.5.
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M = Metric
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12 = Diameter in millimeters
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1.5 = Millimeters gap per thread
Tire Inflation Description
When you inflate the tires to the recommended inflation pressures, the factory-installed wheels and tires are designed in order to handle loads to the
tire's rated load capacity. Incorrect tire pressures, or under-inflated tires, can cause the following conditions:
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Vehicle handling concerns
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Poor fuel economy
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Shortened tire life
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Tire overloading
Inspect the tire pressure when the following conditions apply:
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The vehicle has been sitting at least 3 hours.
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The vehicle has not been driven for more than 1.6 km (1 ml).
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The tires are cool.
Inspect the tires monthly or before any extended trip. Adjust the tire pressure to the specifications on the tire label. Install the valve caps or the
extensions on the valves. The caps or the extensions keep out dust and water.
The kilopascal (kPa) is the metric term for pressure. The tire pressure may be printed in both kilopascal (kPa) and psi. One psi equals 6.9 kPa.