GM Service Manual Online
For 1990-2009 cars only

Inflation Pressure Conversion (Kilopascals to Psi)

Refer to the Vehicle Certification-Label for the correct tire inflation pressure and load for the factory installed tires. The tire pressures may be printed in both kilopascal (kPa) and psi. The correct tire inflation pressures for the factory installed tires is when the tires are cold. "Cold" means the vehicle has been sitting for at least 3 hours or driven no more than 1.6 km (1 mi). Inspect the tires inflation pressure when the tires are cold. One psi equals 6.9 kPa.

kPa

psi

kPa

psi

140

20

215

31

145

21

220

32

155

22

230

33

160

23

235

34

165

24

240

35

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

Important: These pressures and specifications are for Enhanced Mobility Package (EMP) or RPO EM7 only.

Tire Inflation Pressure Specifications* (EMP Only)

Terrain

Deflection

Maximum Speed

Load

Minimum Inflation

Highway ** Front Axle

--

93 mph (149 km/h)

2400 lbs (1089 kg)

45 PSI (3.10 Bar)

Highway ** Rear Axle

--

93 mph (149 km/h)

3042 lbs (1390 kg)

65 PSI (4.48 Bar)

Highway ***

18%

93 mph (149 km/h)

2300 lbs (1043 kg)

40 PSI (2.76 Bar)

Cross Country ***

25%

30 mph (48 km/h)

2300 lbs (1043 kg)

23 PSI (1.59 Bar)

Mud, Sand, Snow ***

30%

10 mph (16 km/h)

2300 lbs (1043 kg)

18 PSI (1.24 Bar)

* Option Package EMP (Enhanced Mobility Package) vehicles only. Non-EMP vehicles refer to the Tire and Loading Information label attached to the vehicles center pillar (B-pillar), below the driver’s door lock post (striker).

** Inflation pressure needed to obtain the Gross Vehicle Weight Rating (GVWR).

*** All Axles