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Certification/Tire Label
The Certification/Tire label is found on the rear edge of
the driver’s door or in the Incomplete Vehicle
Document in the cab.
The label shows the size of your original tires and the
inflation pressures needed to obtain the gross weight
capacity of your vehicle. This is called the GVWR
(Gross Vehicle Weight Rating). The GVWR includes the
weight of the vehicle, all occupants, fuel and cargo.
The Certification/Tire label also tells you the maximum
weights for the front and rear axles, called Gross
Axle Weight Rating (GAWR). To find out the actual loads
on your front and rear axles, you need to go to a
weigh station and weigh your vehicle. Your dealer can
help you with this. Be sure to spread out your load
equally on both sides of the centerline.
Never exceed the GVWR for your vehicle, or the GAWR
for either the front or rear axle.
The Certification/Tire label also contains information
about your Front Axle Reserve Capacity. See “Front
Axle Reserve Capacity” later in this section.
And, if you do have a heavy load, you should spread
it out.
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