Airstream 2013 Classic Owner's Manual page 56

ExTERIOR
special gauge will be required designed for larger tires.
• Don't bleed air from warm tires to reduce pressure buildup
Don't inflate tires to cold PSI rating beyond rim specifications.
Tire pressure should never be reduced below the vehicle manufacturer's
D
recommended levels to support load conditions in order to improve the ride quality
of a vehicle. The difference in ride quality is not significant. When minimum inflation
pressure requirements are not met, tire durability and optimum operation can be
affected.
Always check air pressure with an accurate air gauge at a cold PSI. Never
reduce pressure when a tire is hot and never exceed the maximum cold
pressure molded on the sidewall.
Tires on RV applications are subject to a variety of more severe conditions
when compared to automobiles or trucks. Because of many chassis and
optional equipment differences, it is possible for an RV to be within its Gross
Vehicle Weight Rating (GVWR), but overloaded when taking into consideration
the weight of each wheel position.
The only way you can know the safe load and inflation pressure for the
tires your RV is to know the actual weight of each wheel position under
actual loaded conditions.
Under inflation of a tire can cause poor handling, irregular wear, and decreased
fuel economy. It also causes extreme heat build up within the components of
the tire, which can lead to failure. Over inflation of the tire causes a deformation
of the contact patch resulting in crowning of the center tread. This causes
handling problems such as reduced traction, irregular wear, and an increased
chance for impact damage.
Only after the individual loaded weight is known for each wheel position can
a recommended air pressure be utilized using the load and inflation tables
included in this web site.
If there is a difference between one side of the RV versus the other, the load
must be redistributed so weights are as even as possible. As stated, you can be
overloaded by specific wheel position, as well as one side compared to another.
Such a situation can cause stresses on tires, wheels, and other components.
Always check air pressure with an accurate air gauge at a cold PSI. Never
reduce pressure when a tire is hot and never exceed the maximum cold
pressure molded on the sidewall.
The following work sheets are used for determining your loaded weight by
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