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STARTING AND OPERATING 185
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Vehicles type 2500 C/HC/SHC
The vehicles are factory equipped with "L" or "N"-rated
tires, which have a speed rating of 74 mph (120 km/h)
or 87 mph (140 km/h) respectively.
Vehicles type 3500 C/HC/SHC
The vehicles are factory equipped with "L", "N" or "R"-
rated tires, which have a speed rating of 74 mph (120
km/h), 87 mph (140 km/h) or 106 mph (170 km/h)
respectively.
Tire Grip
Tire grip is greatly reduced on a wet, snow covered or
icy road. Speed and driving style must therefore be
adapted to suit road conditions. The safe speed on a
wet, snow covered or icy road is always lower than on
a dry road.
Below a tread depth of 1/8 in (3 mm), tire grip begins
to decrease rapidly on wet roads.
Pay particular attention to the condition of the road
whenever the outside temperatures are close to the
freezing point.
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.
In winter, install M+S radial tires with a minimum
tread depth of approximately 1/6 in (4 mm) on all
wheels 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.
For information on winter tires, refer to "Winter
Operation".
WARNING!
If ice has formed on the road, tire traction will be
substantially reduced. Under such weather condi-
tions, drive, steer and brake with extreme caution.