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Classic - Airstream

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Exterior<br />

D<br />

special gauge will be required designed for larger tires.<br />

• Don’t bleed air from warm tires to reduce pressure buildup<br />

Don’t inflate tires to cold PSI rating beyond rim specifications.<br />

Tire pressure should never be reduced below the vehicle manufacturer’s<br />

recommended levels to support load conditions in order to improve the ride quality<br />

of a vehicle. The difference in ride quality is not significant. When minimum inflation<br />

pressure requirements are not met, tire durability and optimum operation can be<br />

affected.<br />

Always check air pressure with an accurate air gauge at a cold PSI. Never<br />

reduce pressure when a tire is hot and never exceed the maximum cold<br />

pressure molded on the sidewall.<br />

Tires on RV applications are subject to a variety of more severe conditions<br />

when compared to automobiles or trucks. Because of many chassis and<br />

optional equipment differences, it is possible for an RV to be within its Gross<br />

Vehicle Weight Rating (GVWR), but overloaded when taking into consideration<br />

the weight of each wheel position.<br />

The only way you can know the safe load and inflation pressure for the<br />

tires your RV is to know the actual weight of each wheel position under<br />

actual loaded conditions.<br />

Under inflation of a tire can cause poor handling, irregular wear, and decreased<br />

fuel economy. It also causes extreme heat build up within the components of<br />

the tire, which can lead to failure. Over inflation of the tire causes a deformation<br />

of the contact patch resulting in crowning of the center tread. This causes<br />

handling problems such as reduced traction, irregular wear, and an increased<br />

chance for impact damage.<br />

Only after the individual loaded weight is known for each wheel position can<br />

a recommended air pressure be utilized using the load and inflation tables<br />

included in this web site.<br />

If there is a difference between one side of the RV versus the other, the load<br />

must be redistributed so weights are as even as possible. As stated, you can be<br />

overloaded by specific wheel position, as well as one side compared to another.<br />

Such a situation can cause stresses on tires, wheels, and other components.<br />

Always check air pressure with an accurate air gauge at a cold PSI. Never<br />

reduce pressure when a tire is hot and never exceed the maximum cold<br />

pressure molded on the sidewall.<br />

The following work sheets are used for determining your loaded weight by<br />

D - 14

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