Ford Explorer Sport Trac Owner's Manual page 145

Note: If the crossbars are repositioned close to each other, the vehicle
may exhibit objectionable noise at highway speeds. This noise can be
minimized by positioning the front crossbar just behind the front door
and the rear crossbar in the furthest rearward position.
Loaded vehicles, with a higher center of gravity, may handle
differently than unloaded vehicles. Extra precautions, such as
slower speeds and increased stopping distance, should be taken when
driving a heavily loaded vehicle.
Vehicles with a higher center of gravity such as utility and
four-wheel drive vehicles handle differently than vehicles with a
lower center of gravity. Utility and four-wheel drive vehicles are not
designed for cornering at speeds as high as passenger cars any more
than low-slung sport cars are designed to perform satisfactorily under
off-road conditions. Avoid sharp turns, excessive speed and abrupt
maneuvers in these vehicles. Failure to drive cautiously could result in
an increase risk of loss of vehicle control, vehicle rollover, personal
injury and death.
2008 07+ Explorer Sport Trac (esp)
Owners Guide (post-2002-fmt)
USA (fus)
Driver Controls
145