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Hydroplaning, Traction, The speed rating – Mercedes-Benz SLR-Class 2007 User Manual

Page 242: Hydroplaning tire traction tire speed rating

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241

Operation

Driving instructions

Hydroplaning

Depending on the depth of the water layer
on the road, hydroplaning may occur, even
at low speeds and with new tires. Reduce
vehicle speed, avoid track grooves in the
road and apply brakes cautiously in the
rain.

Tire traction

The safe speed on a wet, snow covered or
icy road is always lower than on a dry road.

You should pay particular attention to the
condition of the road whenever the outside
temperatures are close to the freezing
point.

Mercedes-Benz recommends winter tires
(

page 290) with a minimum tread depth

of approximately

1

/

6

in (4 mm) on all four

wheels for the winter season to ensure
normal balanced handling characteristics.
On packed snow, they can reduce your
stopping distance compared to summer
tires. Stopping distance, however, is still
considerably greater than when the road is
not covered with snow or ice. Exercise
appropriate caution.

Tire speed rating

Regardless of the tire speed rating, local
speed limits should be obeyed. Use
prudent driving speeds appropriate to
prevailing conditions.

Your vehicle is factory equipped with
“(Y)”-rated tires, which have a speed rating
of over 186 mph (300 km/h).

Warning!

G

If ice has formed on the road, tire traction

will be substantially reduced. Under such

weather conditions, drive, steer and brake

with extreme caution.

!

Avoid spinning of a drive wheel. This may

cause serious damage to the drivetrain which is
not covered by the Mercedes-Benz Limited
Warranty.

Warning!

G

Even when permitted by law, never operate

a vehicle at speeds greater than the maxi-

mum speed rating of the tires.

Exceeding the maximum speed for which

tires are rated can lead to sudden tire

failure, causing loss of vehicle control and

possibly resulting in an accident and/or

personal injury and possible death, for you

and for others.

i

For information on tire speed rating for win-

ter tires, see “Winter tires*” (

page 290).

For additional general information on tire speed
markings on tire sidewall, see “Tire speed rating”
(

page 276).