W E I G H I N G , L O A D I N G , A N D T O W I N G
T H O R M O T O R C O A C H | M A D E T O F I T
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Reading A: Front
Reading B: Total Coach
Reading C: Back
NOTE: Thick Black Lines in the illustrations above
represent a vehicle weighing scale.
Weighing Your Motorhome
When loading your cargo, be sure weight is distributed
evenly to prevent overloading front to back and side to
side. Heavy items should be placed low and as close to
the axle positions as possible. Too many items stored on
one side of your motorhome may overload tires and cause
handling issues.
Periodically weigh your motorhome at a public vehicle
scale to determine axle loads. You can find certified public
or commercial vehicle scales at moving and storage lots,
farm suppliers with grain elevators, gravel pits, recycling
companies, and large commercial truck stops.
To weigh your motorhome correctly, measure the fully loaded
vehicle axle by axle and wheel position by wheel position.
Allow adequate time, since the entire weighing process can
take around 30 minutes. There may be a small fee for each
weight reading taken, but the expense is a worthwhile invest-
ment toward the safe operation of your motorhome.
Your motorhome must be weighed fully loaded, which
includes passengers, food, clothing, fuel, water, propane,
supplies, etc. Any towed vehicle (car/pickup, boat, or trailer)
or items loaded on brackets on the back of the motorhome
should also be included in the weighing process.
The following procedure is suggested when using a long
platform scale, although any method recommended by
the scale operator that correctly determines weight value
is acceptable. During all measurements, it is important to
keep the vehicle as level as possible.
1. Pull onto the scale so that only the front axle is on the
platform with the end of the scale midway between the
front and rear axles and record the weight
(Reading A).
2. Pull forward until the full unit is on the scale and
record the weight
(Reading B).
3. Pull forward so that only the rear axle is on the scale
and record the weight
(Reading C).
4. To determine the weight of individual wheel positions,
repeat the previous three steps, but this time, use only
one side of the motorhome on the scale. Record the
weight readings.
5. To calculate the wheel position weight for the opposite
side of the motorhome, subtract these weight readings
from weight readings A, B, and C recorded in steps 1,
2, and 3.
OTHER FACTORS TO CONSIDER:
• Your motorhome must remain as level as possible on
the scale, even though an axle or side is not physically
on the scale. To obtain the side-to-side weight mea-
surements, there must be enough space on either side
of the scale to allow the motorhome to be partially off
the scale.
• For improved accuracy, Thor Motor Coach recom-
mends using a segmented 4-pad scale, when possible,
to determine individual wheel weight measurements.
The corner weight measurements should not exceed
half of the respective Gross Axle Weight Rating
(GAWR) or the maximum load rating for the tire or
set of dual tires at the rear, whichever is less.
• Individual wheel position weight measurements must
not exceed the maximum tire load capacity. The max-
imum load rating for the tire can be found embossed
on the tire’s sidewall.
Summary of Contents for CLASS A
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