2001 Saab 9-3 Owner's Manual - Page 184
2001 Saab 9-3 Manual
Page 184 highlights
184 Starting and driving Tires NOTE Check the tire pressure at least once a month. Underinflation is the main cause of: • Damage to the wheels. • Premature tire wear. • Damage to the sidewalls. The tire pressure should match the current load and speed of the car; see the back cover or the tire pressure label on page 253. The tire pressures given apply to cold tires, that is tires that are the same temperature as the outside air temperature. The tire pressure increases as the tires become warm (e.g. during highway driving) with approximately 0.3 bar (4 psi). When the temperature of the tires changes by 50° (10°C), the tire pressure will change 0.1 bar (2 psi). Never reduce the pressure of a hot tire. If the tires are hot when you check them, only increase the pressure, if necessary. Underinflated tires wear more quickly than slightly overinflated tires. If a valve is leaking, simply unscrew it and fit a new one. Important! Remember to adjust the tire pressures if you change the load in the car or intend to drive at substantially lower or higher speeds than normal. Driving with a load The driving characteristics of the car are affected by the way it is loaded. • Place heavy loads as far forward and as low as possible in the trunk. • Secure the load to the tie downs, see page 148. • The load should be such that the car´s total weight or axle weight are not exceeded, see page 245. • Heavy loads mean that the car's center of gravity is further back. As a result, the car will sway more during evasive steering. • Never exceed the permissible load in the roof box, even if there is room for more. • Ensure that the tire pressure is correct - slight overinflation is preferable to underinflation. • The braking distance of a loaded car is always greater. Keep your distance from the vehicle in front. Tire pressure, see page 217 and back cover.