
Where To Find scales
You should be able to find certified scales by looking in your
Yellow Pages for moving and storage companies, farm suppliers,
gravel pits, recycling companies or commercial truck stops.
Be sure to call in advance to determine whether the
facility offers public weighing services, their hours of
operation and any fees that might be involved.
How To Use Scales
There are several different kinds of scales, including single
platforms, segmented platforms (that can make several
measurements at the same time) and single axle scales.
Ask the scale operators for help. Show them this booklet,
and explain that you need to know the weight on each axle
end – with the vehicle as level as possible.
Regardless of scale type, you must be able to determine the
overall weight, the right- and left-side weights for each axle,
and the weight on each individual axle – from front to rear.
Weigh Everything
For accurate weights, you must weigh the vehicle with all
of your passengers, food, clothing, fuel, water, propane and
supplies. Any towed vehicle (car / pickup, boat or trailer) or
item loaded onto the vehicle (dirt bike, motorcycle, etc.)
must be included in the weighing.
Be Prepared
It may take half an hour or more to weigh your vehicle. Be sure
to take a copy of this booklet with you, so you will have a place
to record all the weights you’ll need.
And, bear in mind that depending on what you learn, it may
be necessary to remove or redistribute part of the load, then
weigh the vehicle again.
Look for scales at
moving and storage companies,
farm suppliers, gravel pits,
recycling companies or truckstops
How Much Should It Weigh?
The maximum weights for your vehicle will appear on a vehicle placard
like those pictured here. Notice that the placard should tell you
the Gross Axle Weight Rating (GAWR) for each axle, the
Gross Vehicle Weight Rating (GVWR) for the whole vehicle,
along with information about the correct tire and rim sizes and
recommended cold tire inflation pressures.
If you exceed the GVWR, you must remove part of the load until
you are within the legal limits.
How Do We Know The
Correct Axle End Loads?
The maximum load on each axle end is half the GAWR for that axle.
You must not exceed the total GAWR for any axle, or the maximum
for any axle end.
Even if the vehicle as a whole does not exceed
the GVWR, a given axle end might be overloaded.
In that case, you must redistribute the load.
Choosing Correct
Tire Inflation Pressure
Measure
the Load
If an axle end has dual tires, the load on each tire is half the load
on the axle end. Never exceed the maximum tire load rating that
is molded into the tire’s sidewall (along with the inflation pressure
for that load). Never exceed maximum load or
inflation pressure rating of your wheels.
Find the Recommended
Inflation Pressure
Always determine correct tire inflation pressure
based on actual loads on the tires. Use the
tiremakers’ recommendations (which you will
find in load and inflation tables). Never use
inflation pressures lower than those printed on
the vehicle placard.
All tires on both ends of an axle must have
the same inflation pressure. If the load on each
axle end is so different that different inflation
pressures are recommended, use the higher
pressure on both ends – or – redistribute load so
that the same inflation pressure is recommended
for both axle ends.
|