The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels.

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. ...
Run-flat tires
The symbol identifying run-flat tires is a circle with the letters RSC on the
sidewall.
Run-flat tires comprise a conditionally self-supporting tire and a special rim.
The reinforcement in the ...
2011 BMW 328 review
As BMW runs a war path with new model introductions — two gigantic,
turtle-shaped crossovers a year, at this pace — they haven't forgotten where the
profit margin lies. It's in the little 3 Series ...
