See also:

Remove attached parts following use
Remove unneeded auxiliary mirrors, roof or rear luggage racks after use. Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption. ...

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 ...

Tire Identification Number
Tires with DOT codes meet the guidelines of the U.S. Department of Transportation. DOT code: DOT xxxx xxx 3410 xxxx: manufacturer code for the tire brand xxx: tire size and tire design 3410: ti ...