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VEHICLE LOADING
Certification Label
As required by National Highway Traffic
Safety Administration regulations, your
vehicle has a certification label affixed to
the driver's side door or pillar.
This label contains the month and year
of manufacture, Gross Vehicle Weight
Rating (GVWR), Gross Axle Weight
Rating (GAWR) front and rear, and
Vehicle Identification Number (VIN).
A Month-Day-Hour (MDH) number is
included on this label and indicates the
Month, Day and Hour of manufacture.
The bar code that appears on the
bottom of the label is your VIN.
Gross Vehicle Weight Rating
(GVWR)
The GVWR is the total permissible
weight of your vehicle including driver,
passengers, vehicle, options and cargo.
The label also specifies maximum
capacities of front and rear axle
systems (GAWR). Total load must be
limited so GVWR and front and rear
GAWR are not exceeded.
Payload
The payload of a vehicle is defined as
the allowable load weight a truck can
carry, including the weight of the driver,
all passengers, options and cargo.
Gross Axle Weight Rating
(GAWR)
The GAWR is the maximum permissible
load on the front and rear axles. The
load must be distributed in the cargo
area so that the GAWR of each axle is
not exceeded.
Each axle GAWR is determined by the
components in the system with the
lowest load carrying capacity (axle,
springs, tires or wheels). Heavier axles
or suspension components sometimes
specified by purchasers for increased
durability does not necessarily increase
the vehicle's GVWR.
Tire Size
The tire size on the Vehicle Certification
Label represents the actual tire size on
your vehicle. Replacement tires must be
equal to the load capacity of this tire
size.
Rim Size
This is the rim size that is appropriate
for the tire size listed.
Inflation Pressure
This is the cold tire inflation pressure for
your vehicle for all loading conditions up
to full GAWR.
Curb Weight
The curb weight of a vehicle is defined
as the total weight of the vehicle with all
fluids, including vehicle fuel, at full
capacity conditions, and with no
occupants or cargo loaded into the
vehicle. The front and rear curb weight
values are determined by weighing your
vehicle on a commercial scale before
any occupants or cargo are added.
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The actual total weight and the weight
of the front and rear of your vehicle at
the ground can best be determined by
weighing it when it is loaded and ready
for operation.
The entire vehicle should first be
weighed on a commercial scale to
insure that the GVWR has not been
exceeded. The weight on the front and
rear of the vehicle should then be
determined separately to be sure that
the load is properly distributed over the
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STARTING AND OPERATING
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