Recommended tyre pressures
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
The gauging of tyre pressures should normally be done on cold tyres, which means that the tyre temperature is the same as the surrounding temperature. Pressure rises in warm tyres (e.g. fast driving on motorways), and drops with the temperature.
The values below for air pressures apply at 20 °C. For every 10°C the air pressure rises or falls below by 0.1 bar (2 psi).