GM Service Manual Online
For 1990-2009 cars only
Table 1: Inflation Pressure at Full Load
Table 2: Inflation Pressure Conversion Specifications

Inflation Pressure at Full Load

Tires

Wheels

Front

Rear

175/70R14

5.5J x 14 (Steel)

205 kPa

30 psi

205 kPa

30 psi

175/70R14

5.5J x 14 (Alloy)

205 kPa

30 psi

205 kPa

30 psi

185/65R14

5.5J x 14 (Steel)

205 kPa

30 psi

205 kPa

30 psi

185/65R14

5.5J x 14 (Alloy)

205 kPa

30 psi

205 kPa

30 psi

195/55R15

6J x 15 (Steel)

205 kPa

30 psi

205 kPa

30 psi

195/55R15

6J x 15 (Alloy)

205 kPa

30 psi

205 kPa

30 psi

195/55R15

6J x 15 (Alloy, Sporty)

205 kPa

30 psi

205 kPa

30 psi

T125/70D15

4T x 15

415 kPa

60 psi

415 kPa

60 psi

Inflation Pressure Conversion Specifications

kPa

psi

kPa

psi

kPa

psi

140

20

185

27

235

34

145

21

190

28

240

35

155

22

200

29

250

36

160

23

205

30

275

40

165

24

215

31

310

45

170

25

220

32

345

50