2003 Saab 9-3 Owner's Manual - Page 207
2003 Saab 9-3 Manual
Page 207 highlights
Car care Tire pressure WARNING Check the tire pressure at least once a month and before long journeys. Underinflation can result in: • punctures • separation of the tire and tread • damage to the sidewalls • damage to the rims on poor roads • poor handling characteristics. Note: Low tire pressure also causes premature tire wear and increased fuel consumption. Adjust the tire pressure to match the current load and speed of the car (see page 245). The stated tire pressures apply to cold tires, i.e. tires that are the same temperature as the outside air temperature. Tire pressure increases as the tires become warm (e.g. during highway driving) by approximately 0.3 bar (4 psi). When the temperature of the tires changes by 50°F (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. Soft tires will cause faster wear than overpressurized tires. If a valve is leaking, simply unscrew it and fit a new one. Note: Remember to adjust the tire pressure if you change the load in the car or intend to cruise at a speed that is substantially different from normal. (option, certain variants only) 207 Automatic tire pressure monitoring WARNING The system is intended to aid the driver. The driver is always ultimately responsible for ensuring that the tire pressure is correct. The pressure monitoring system consists of a sensor in each wheel, a detector in each wheel housing and a receiver. The sensors are located inside the wheels directly adjacent to the air valves. NOTICE Great care must be taken when changing tires so as not to damage the sensors that are integrated in the valves.