BMW GRAN COUPE 4 Series Owner's Manual page 260

Mobility
Vehicle paint
General information
Regular care contributes to driving safety and
value retention. Environmental influences in
areas with elevated air pollution or natural con‐
taminants, such as tree resin or pollen can af‐
fect the vehicle's paintwork. Tailor the fre‐
quency and extent of your vehicle care to
these influences.
Aggressive substances such as spilled fuel, oil,
grease or bird droppings, must be removed im‐
mediately to prevent the finish from being al‐
tered or discolored.
Matte finish
Only use cleaning and care products suitable
for vehicles with matte finish.
Leather care
Remove dust from the leather regularly, using
a cloth or vacuum cleaner.
Otherwise, particles of dust and road grime
chafe in pores and folds, and lead to increased
wear and premature degradation of the leather
surface.
To guard against discoloration, such as from
clothing, clean leather and provide leather care
roughly every two months.
Clean light-colored leather more frequently be‐
cause soiling on such surfaces is substantially
more visible.
Use leather care products; otherwise, dirt and
grease will gradually break down the protective
layer of the leather surface.
Upholstery material care
General information
Vacuum the upholstery regularly with a vac‐
uum cleaner.
If upholstery is very dirty, for instance with bev‐
erage stains, use a soft sponge or microfiber
cloth with a suitable interior cleaner.
260
Care
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Clean the upholstery down to the seams using
large sweeping motions. Avoid rubbing the
material vigorously.
Safety information
NOTE
Open Velcro® fasteners on articles of
clothing can damage the seat covers. There is
a risk of property damage. Ensure that any Vel‐
cro® fasteners are closed.◀
Caring for special components
Light-alloy wheels
When cleaning the vehicle, use only neutral
wheel cleaners having a pH value from 5 to 9.
Do not use abrasive cleaning agents or steam
jets above 140 ℉/60 ℃. Follow the manufac‐
turer's instructions.
Aggressive, acidic or alkaline cleaning agents
can destroy the protective layer of adjacent
components, such as the brake disc.
After cleaning, apply the brakes briefly to dry
them. The heat generated during braking dries
brake discs and brake pads and protects them
against corrosion.
Chrome surfaces
Carefully clean components such as the radia‐
tor grille or door handles with an ample supply
of water, possibly with shampoo added, partic‐
ularly when they have been exposed to road
salt.
Rubber components
Environmental influences can cause surface
soiling of rubber parts and a loss of gloss. Use
only water and suitable cleaning agents for
cleaning.
Treat especially worn rubber parts with rubber
care agents at regular intervals. When cleaning
rubber seals, do not use any silicon-containing
vehicle care products in order to avoid damage
or noises.