Snow Chains; Tyre Pressure - SMART forfour Owner's Manual

corresponding to the direction of rota-
tion.
An arrow on the sidewall of the tyre indi-
cates its correct direction of rotation.
If you fit M+S tyres that have a lower max-
imum permissible speed than that of the
vehicle, affix an appropriate warning sign
in the driver's field of vision. This can be
obtained at a qualified specialist work-
shop.
Under these circumstances, you should also
use the speed limiter to restrict the max-
imum speed of the vehicle so that it does
not exceed the maximum permissible speed
Y
for the M+S tyres (
When you have fitted the M+S tyres:
X
Check the tyre pressures (
X
Restart the tyre pressure monitor (vehi-
cles with black and white display)
Y
( page 254).
X
Restart the tyre pressure monitor (vehi-
cles with colour display) (

Snow chains

G
WARNING
If you have fitted snow chains to the front
wheels, they may scrape against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tyres.
There is a risk of an accident.
To avoid hazardous situations:
never fit snow chains on the front wheels
R
fit snow chains to the rear wheels in
R
pairs.
! Vehicles with steel wheels: if you fit
snow chains on steel wheels, you may
damage the hub caps. Remove the hub caps
from the relevant wheels before fitting
the snow chains.
smart recommends that you only use snow
chains that have been specially approved
for smart. For more information, please
page 147).
Y
page 251).
Y
page 254).
contact the smart centre or a qualified
specialist workshop.
If you intend to fit snow chains, please bear
the following points in mind:
snow chains cannot be fitted to all
R
wheel-tyre combinations. Permissible
wheel-tyre combinations (
only use snow chains when the road sur-
R
face is completely snow-covered. Remove
the snow chains as soon as possible when
you come to a road that is not snow-cov-
ered.
local regulations may restrict the use of
R
snow chains. Observe the appropriate
regulations if you wish to fit snow
chains.
do not exceed the maximum permissible
R
speed of 50 km/h.

Tyre pressure

Tyre pressure specifications
G
WARNING
Underinflated or overinflated tyres pose
the following risks:
the tyres may burst, especially as the
R
load and vehicle speed increase.
the tyres may wear excessively and/or
R
unevenly, which may greatly impair tyre
traction.
the driving characteristics, as well as
R
steering and braking, may be greatly
impaired.
There is a risk of an accident.
Observe the recommended tyre pressure and
check the tyre pressure of all the tyres:
at least every two weeks
R
when the load changes
R
before embarking on a longer journey
R
for changed operating conditions, e.g.
R
off-road driving
If necessary, correct the tyre pressure.
Tyre pressure
Y
page 260).
Z
251