Mercedes-Benz CLK-Class Owner's Manual page 257

Operation
Tyres and wheels
G
Risk of accident
Have the tightening torque checked after a
wheel change at a qualified specialist work-
shop which has the necessary specialist
knowledge and tools to carry out the work
required. Mercedes-Benz recommends that
you use a Mercedes-Benz Service Centre for
this purpose. In particular, work relevant to
safety or on safety-related systems must be
carried out at a qualified specialist work-
shop.
The wheel bolts could work loose if they are
not tightened to a torque of 110 Nm.
Mercedes-Benz recommends that, for safety
reasons, you only use suitable wheel bolts
which have been approved for Mercedes-
Benz.
254
Tyre grip
Although you may be able to control the
vehicle fully at a given speed on a dry road
surface, you must reduce your speed on a
wet or icy road surface to achieve the
same level of road safety.
You should pay particular attention to the
road conditions when the temperatures
are around freezing.
If ice has formed on the road surface (e.g.
due to fog), a thin film of water quickly
forms on the ice when you brake, which
greatly reduces tyre grip. You should drive
particularly carefully in such weather con-
ditions.