State Regulations
Most states require the registration of trailers.
Additional regulations may call for
extensive light, reflector, and turn-signal
systems. Special braking and sway control
systems may be required on larger trailers.
For the legal requirements, consult the
authorities in your area and in each state in
which you will be towing your boat.
THE TOW VEHICLE
A tow vehicle must have adequate power
to tow the boat and trailer. The vehicle
owner’s manual will specify the maximum
trailer gross weight and tongue weight
acceptable for that vehicle.
• Front wheel drive vehicles have limitations
in their ability to tow heavy trailers.
• The weight of the trailer rig may lift the
drive wheels off the ground.
• You may need special equipment when
pulling even lightweight trailers with a
front wheel drive car.
• Modern frameless cars are often unable
to support the hitches necessary for larger
boats.
• Heavy-duty pickup trucks, vans, and utility
vehicles, with their longer wheelbases
and sturdier frames, are often the choice
for tow vehicles.
Tow Vehicle Equipment
How you equip your tow vehicle will
depend upon the size and gross weight of
your trailer rig. Special vehicle equipment
often includes:
• Large engine
• Oversized radiator
• Heavy-duty battery and/or alternator
• Heavy-duty brakes and suspension
systems
• Heavy-duty flashers for expanded turn
signal systems
• Limited slip differentials, special rear axle
ratio
• Heavy-duty transmissions with transmission
coolers
• Side-view mirrors large enough to provide
an unobstructed rear view
Most vehicle manufacturers offer trailer towing
packages that include the trailer hitch,
coupler ball, and wiring harness, as well as
much of the heavy-duty equipment mentioned
above.
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Figure 14-3. Trailer arrangement showing supports and tiedowns