2009 BMW 5 Series Owner's Manual - Page 136

Things to remember when driving Things to remember when driving Break-in period Moving parts need breaking-in time to adjust to each other. To ensure that your vehicle continues to provide optimized economy of operation throughout an extended service life, we request that you devote careful attention to the following section. Following part replacement Observe the break-in instructions again if components mentioned above must be replaced after subsequent driving operation. Saving fuel The fuel consumption of your vehicle depends on various factors. Through a few simple steps, your driving style, and regular maintenance, you can have a positive influence on your fuel consumption and environmental impact. Engine and differential Always obey all official speed limits. Up to 1,200 miles/2,000 km Drive at changing engine and driving speeds, however do not exceed 4,500 rpm or 100 mph/ 160 km/h. Avoid full-throttle operation and use of the transmission's kick-down mode during these initial miles. Removing unnecessary cargo Additional weight increases fuel consumption. Removing add-on parts after use Remove unneeded auxiliary mirrors, roof or rear luggage racks after use. Add-on parts attached to the vehicle impede the aerodynamics and increase the fuel consumption. From 1,200 miles/2,000 km The engine and vehicle speed can gradually be increased. Closing windows and glass sunroof An open glass sunroof or open windows likewise increase the drag coefficient and therefore the fuel consumption. Tires Due to technical factors associated with their manufacture, tires do not achieve their full traction potential until after an initial break-in period. Therefore, drive reservedly during the first 200 miles/300 km. Checking tire inflation pressures regularly Check and correct the tire inflation pressure as needed at least twice a month and before long trips. An insufficient tire inflation pressure increases the rolling resistance and thus increases the fuel consumption and tire wear. Brake system Brakes require an initial break-in period of approx. 300 miles/500 km to achieve optimized contact and wear patterns between brake pads and rotors. Drive in a reserved manner during this break-in period. Driving off immediately Do not allow the engine to warm up by leaving it running while the vehicle remains stationary. Instead, begin to drive at a moderate engine speed. This is the fastest way for the cold engine to reach its operating temperature. Clutch The function of the clutch is only at its optimized level after a distance driven of approx. 300 miles/500 km. During this break-in period, engage the clutch gently. 134 Online Edition for Part no. 01 41 2 600 721 - © 08/08 BMW AG