FORD 2002 F-550 v.2 - Manual (Page 159)

Avoid sudden applications of power and quick changes of direction on
snow and ice. Apply the accelerator slowly and steadily when starting
from a full stop.
Avoid sudden braking as well. Although a 4WD vehicle may accelerate
better than a two-wheel drive vehicle in snow and ice, it won’t stop any
faster, because as in other vehicles, braking occurs at all four wheels. Do
not become overconfident as to road conditions.
Make sure you allow sufficient distance between you and other vehicles
for stopping as well as drive slower than usual and consider using one of
the lower gears. In emergency stopping situations, avoid locking of the
wheels. Use a “squeeze” technique, push on the brake pedal with a
steadily increasing force which allows the wheels to brake yet continue to
roll so that you may steer in the direction you want to travel. If you lock
the wheels, release the brake pedal and repeat the squeeze technique. If
your vehicle is equipped with a Four Wheel Anti-Lock Brake System
(ABS), apply the brake steadily. Do not “pump” the brakes. Refer to the
Brakes section of this chapter for additional information on the operation
of the anti-lock brake system.
Never drive with chains on the front tires of 4WD vehicles without also
putting them on the rear tires. This could cause the rear to slide and
swing around during braking.
Tires, Replacement Requirements
4WD vehicles are equipped with tires designed to provide for safe ride
and handling capability.
Do not use a size and type of tire and wheel other than that
originally provided by Ford because it can affect the safety and
performance of your vehicle, which could lead to loss of vehicle control
or roll over and serious injury.
Make sure all tires and wheels on the vehicle are of the same size, type,
tread design, brand and load-carrying capacity. If you have questions
regarding tire replacement, see an authorized Ford or Lincoln/Mercury
dealer.
If you nevertheless decide to equip your 4WD for off-road use with tires
larger than what Ford recommends, you should not use these tires for
highway driving.
Driving
159