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Actions in the event of a flat tire
Normal tires 1. Identify the damaged tire. Do this by checking the air pressure in all four tires. If the tire inflation pressure in all four tires is correct, the Flat Tire Monitor may not hav ...

Caring for special components
Light-alloy wheels Use wheel cleaner, particularly during the winter months. Do not use aggressive, acidic, strongly alkaline or abrasive cleaners, or steam jets above 140 ℉/60 ℃; f ...

Aerodynamic optimisation of underside panelling
As the excellent drag coefficient (cd = 0.26) would suggest, the aerodynamics of the new BMW 3-Series have been intensively honed in a state-of-the-art wind tunnel. The optimised aerodynamics also ...