Overweight Trailers and Fifth Wheels
Trailers and fifth wheels, like motor homes, may
be susceptible to overweight problems. It's
true, however, that travel trailers don't
actually come off the assembly line literally
overweight. This is because no manufacturer can
legally sell a trailer (or motor home, for that
matter) with a dry weight (the trailer's weight
as built at the factory) that exceeds its GVWR,
Gross Vehicle Weight Rating. Yet for all
practical purposes, the vehicle may be
overloaded. If it's stuffed with options, for
instance, there may be insufficient capacity for
payload, even though the added weight of persons
need not be considered.
As JD Gallant states in How to Select,
Inspect, and Buy an RV, "Design deficiencies
are to blame for most of the problems that occur
with trailers and fifth wheels." If the
trailer's design does not allow for the weight
of your necessities of life, the trailer will
either be unusable because it lacks carrying
capacity for your cargo or dangerously
overloaded if you decide to throw caution to the
winds and load your gear anyway. And an
overloaded trailer is prone to tire blowouts,
overheating trailer brakes, axle and/or
suspension breakage and, in extreme cases,
rollover accidents.
The following design deficiencies will result in
insufficient payload:
a) inadequate axle capacity (GAWR); and
b) inadequate frame assemblies, which
together make up the chassis.
When the weight-carrying capacity of the
chassis is close to or less than the trailer's
dry weight, plus factory and dealer-installed
options, plus fresh water and propane, you have
a poorly-designed, overloaded trailer.
An overweight trailer may also be the result of
added options and accessories. Dealers are only
too happy to provide customers with every
convenience and gadget they can dream of. It
puts a smile on the customer's face and money in
the dealer's pocket. Unfortunately, every item
that the dealer has installed in addition to the
options the manufacturer has already built into
a specific model adds "fat", which has caused
some RVers to wind up with a vehicle that was
overweight even before they towed it home.
What can you do if you're stuck with a trailer
that has insufficient payload?
1) Keep the trailer level when traveling.
2) Balance the load. Large storage compartments
beg to be loaded to the gills. For the RVer, the
temptation to overload a trailer or fifth wheel
may be even greater than it is with a motor home.
A travel trailer is more like a house in
people's minds; so, why not equip it with
everything you'd put into your home? The
problem, of course, is that this particular
house, even though it's not motorized, sits on a
foundation with wheels (the chassis), and that
it will spend much of its life traveling down
the road at highway speeds.
3) Location of water tanks is critical for proper
balance of trailers and fifth wheels. They
should always be located over or just forward of
the axle(s) for proper balance. In any case, if
you are overloaded or close to the brink, travel
with all tanks empty if possible.
4) Consider removing heavy options.
5) Be certain the trailer is well matched to
your tow vehicle (as discussed in the How to Tow Safely Guide CD.
6) Be certain you are using the proper hitch for
your towing combination.
7) Move items into the tow vehicle if it has
payload to spare.
8) Although you can't change a trailer's GVWR,
some RVers - as a last resort - attempt to
increase carrying capacity by upgrading to axle
assemblies with a higher weight rating. This is
a relatively expensive and time-consuming choice
- only worth it if you really love the trailer
in every other way. And we don't recommend it
as a remedy for overweight problems - it is
simply a "Band-Aid" fix.
Having an overweight RV is a nagging problem.
Therefore, it is critical to be aware of all
your options and to understand the issues of
weight and balance. Please refer to the How
to Tow Safely Guide available as a bonus when you
Join RV Consumer Group for more detailed
explanation.
RVCG Staff

|
|

Please give us your comments about the
article appearing on this page. We want
to bring you the type of information that
you want and need. Thank you!
|