GM Service Manual Online
For 1990-2009 cars only

Tire Size

Front Tire Cold Inflation Pressure with Occupant and Cargo Weight of 210 kg (470 lbs) or Less

Rear Tire Cold Inflation Pressure with Occupant and Cargo Weight of 210 kg (470 lbs) or Less

Front Tire Cold Inflation Pressure with Occupant and Cargo Weight of Up to 330 kg (740 lbs)

Rear Tire Cold Inflation Pressure with Occupant and Cargo Weight of Up to 330 kg (740 lbs)

P245/45ZR17 95W

210 kPa (30 psi)

210 kPa (30 psi)

240 kPa (35 psi)

240 kPa (35 psi)

P235/40ZR18 91W Speeds Up to 160 km/h (100 mph)

230 kPa (33 psi)

230 kPa (33 psi)

230 kPa (33 psi)

270 kPa (39 psi)

P235/40ZR18 91W Speeds Over 160 km/h (100 mph)

250 kPa (36 psi)

250 kPa (36 psi)

270 kPa (39 psi)

300 kPa (44 psi)

T145/70R17 96M

420 kPa (60 psi)

420 kPa (60 psi)

420 kPa (60 psi)

420 kPa (60 psi)