Section 2 --- Driving & Safety
The Executive 2005
78
Tire Pressure Inflation Guideline
Federal law requires that the specifications for the tire’s maximum load rating be molded into the
sidewall of the tire. The amount of air pressure to use is dependent on the weight of the motorhome
when fully loaded. The tire chart (Section 10) indicates the weights that can be properly supported by
varying air pressures. Decreasing air pressure decreases load carrying capacity.
Always comply with the tire manufacturer's recommended pressure inflation guideline. The actual
weight of the motorhome can vary significantly depending on how it is loaded. For optimum tire wear,
ride and handling always comply with the manufacturer guideline. A tire inflation chart listing proper
inflation pressure for different loads can be found in this section.
The tires of the motorhome are inflated to pressure(s) appropriate for the actual weight on each axle
in the unloaded, shipped condition. When the motorhome is loaded, check and adjust the inflation pres-
sure on each tire as needed.
Always inflate tires to the pressure indicated in the tire chart for the load carried by the tire. DO
NOT OVERINFLATE OR UNDERINFLATE THE TIRES.
The Gross Axle Weight Rating (GAWR) of the axles listed on the federal certification label
attached to the motorhome is the maximum allowable loaded weight on an axle.
When the actual loaded weight of the motorhome and the weight on each axle is unknown, follow
the recommended tire inflation pressure(s) listed on the federal certification label. When loading a
motorhome never exceed the motorhome's Gross Vehicle Weight Rating (GVWR) or the GAWR for
each axle.
Contact the tire manufacturer for further information concerning proper tire pressure inflation and
other tire issues.
Tire Chart - Goodyear
Understanding the Inflation Table:
The tire size is on the left margin of the table. Determine the Single inflation reading or Dual infla-
tion reading, denoted with a D or S on the Table. Single is for the front axle and tag axle (if equipped).
Dual is for the drive axle.
Find the corresponding PSI at the top columns to see the corresponding maximum weight
capacity for that PSI.
NOTE:
Every load range has a maximum rating as well as a minimum rating. Do not
exceed those ratings.
Rated load capacities are listed for individual tires in a Dual or Single position.
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