Hummer H2. Manual — part 2196

GENERAL DESCRIPTION

The factory installed tires are designed 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

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Tire rotation

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

2004 Hummer H2

2004 SUSPENSION Tires and Wheels - Hummer H2

Fig. 20: Tread Wear Indicators
Courtesy of GENERAL MOTORS CORP.

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 in) wide band when the tire tread depth becomes 1.6 mm (2/32 in).

2004 Hummer H2

2004 SUSPENSION Tires and Wheels - Hummer H2

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 mi).

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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.

Inflation Pressure Conversion (Kilopascals to PSI)

kPa

psi

kPa

psi

140

20

215

31

145

21

220

32

155

22

230

33

160

23

235

34

165

24

240

35

2004 Hummer H2

2004 SUSPENSION Tires and Wheels - Hummer H2

Tires with a higher than recommended pressure can cause 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 with a lower than recommended pressure can cause the following conditions:

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A tire squeal on turns

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Hard steering

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Rapid wear and uneven wear on the edge of the tread

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Tire rim bruises and tire rim rupture

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Tire cord breakage

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High tire temperatures

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Reduced vehicle handling

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High fuel consumption

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Soft riding

Unequal pressure on the same axle can cause the following conditions:

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Uneven braking

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Steering lead

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Reduced vehicle handling

Refer to the Tire Placard for specific tire and wheel applications and tire pressures.

ALL SEASONS TIRES DESCRIPTION

170

25

250

36

180

26

275

40

185

27

310

45

190

28

345

50

200

29

380

55

205

30

415

60

Conversion: 6.9 kPa = 1 psi

2004 Hummer H2

2004 SUSPENSION Tires and Wheels - Hummer H2