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The essentials
Tyres with compulsory direction of
r
ot
ation
A directional tread pattern can be identified
by the arrows on the side
wall that point in the
direction of rotation. Always observe the di-
rection of rotation indicated when fitting the
wheel to guarantee optimum properties of
this type of tyres with regard to grip, noises,
wear and aquaplaning.
If it is absolutely necessary to fit the spare
tyre* against the direction of rotation, drive
with care as this means the tyre does not of-
fer optimum driving properties. This is of par-
ticular importance when the road surface is
wet.
To return to directional tread tires, replace the
punctured tyre as soon as possible and re-
store the obligatory direction of rotation of all
tyres.
Subsequent work
●
Alloy wheels: r
epl
ace the wheel bolt caps.
●
Pl
ate wheels: replace the wheel hubcap.
●
Return all tools to their proper storing loca-
tion.
●
If the replaced wheel does not fit in the
spare wheel housing, store it safely in the lug-
gage compartment
›››
page 157.
●
Check the tyre pressure of the newly moun-
ted tyre as soon as possible.
●
In vehicles fitted with a tyre pressure indica-
tor, adjust the pressure and store it in memory
›››
page 315.
●
Have the tightening torque of the wheel
bolts checked as soon as possible with a tor-
que wrench (it should be 120 Nm). Meanwhile,
drive carefully.
●
Have the flat tyre replaced as quickly as
possible.
Snow chains
Use
Snow chains should only be used on the front
wheel
s.
●
Check that they ar
e corr
ectly seated after
driving for a few yards; correct the position if
necessary, in accordance with the manufac-
turer's fitting instructions.
●
Keep your speed below 50 km/h (30 mph).
●
If there is a danger of being trapped de-
spite having mounted the chains, it is best to
disable the driving wheels (ASR) in the ESC
›››
page 229.
Snow chains will improve braking ability as
well as traction in winter conditions.
For technical reasons snow chains may only
be used with the following wheel rim/tyre
combination.
185/70 R14 Chains with links of maximum 13.5
mm
185/65 R15 Chains with links of maximum 13.5
mm
195/55 R16 Chains with links of maximum 9 mm
Remove wheel covers and any integral trim
ring before fitting sno
w chains.
Remove the chains when roads are free of
snow. Driving characteristics worsen, and the
wheels become damaged quickly and may
even be rendered unusable.
WARNING
Snow chains should be correctly tightened
in accordance with the manufact
urer's in-
structions. This will prevent the chains
coming into contact with the wheel hous-
ing.
57
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