Ford 2005 P207 Explorer Sport Trac Owner's Manual page 446

Tires, Wheels and Loading
Do not exceed the GVWR or the GAWR specified on the
certification label.
Towing trailers beyond the maximum recommended gross trailer
weight exceeds the limit of the vehicle and could result in
engine damage, transmission damage, structural damage, loss of vehicle
control, vehicle rollover and personal injury.
Preparing to tow
Use the proper equipment for towing a trailer and make sure it is
properly attached to your vehicle. See your dealer or a reliable trailer
dealer if you require assistance.
Hitches
Do not use hitches that clamp onto the vehicle bumper. Use a
weight-carrying or weight distributing hitch; a weight-distributing hitch is
required for trailers over 3,500 lb. (1,588 kg).
For proper handling, tongue weight must meet these requirements:
• For trailers up to 2,000 lb. (907 kg), do not exceed 200 lb. (91 kg).
• For trailers over 2,000 lb. (907 kg), use 10-15% of trailer weight.
• For Class II receiver hitches, do not exceed tongue weight of 350 lb.
(159 kg). For class III/IV receiver, do not exceed tongue weight of 500
lb. (227 kg) (weight carrying); 770 lb. (349 kg) (weight distributing).
For additional information, please see Ford's RV & Trailer Towing
Guide.
Safety chains
Always connect the trailer's safety chains to the frame or hook retainers
of the vehicle hitch. To connect the trailer's safety chains, cross the
chains under the trailer tongue and allow slack for turning corners. Do
not attach safety chains to the bumper.
Trailer brakes
Electric brakes and manual, automatic or surge-type trailer brakes are
safe if installed properly and adjusted to the manufacturer's
specifications.
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2005 P207 Explorer Sport Trac (p27)
Owners Guide (post-2002-fmt)
USA_English (fus)