Cayman 2006 Driving & Safety — Section 2 • 49
The Federal Certifi cation Label is a guide in knowing the maximum loaded axle weight rating GAWR, and
subsequently the correct tire infl ation pressure for that weight. Every recreational vehicle, even of the same make
and model, will vary in actual loaded axle weights because of different options and personal loads.
While the actual loaded axle weight should be below the GAWR, the motorhome must be weighed in a loaded
condition to determine actual weight. Separately weigh the front and, rear axle. It is possible for a motorhome
to be within the GVWR yet overloaded on one axle. It is even possible for one wheel position to be overloaded,
even though the GAWR has not been exceeded. For this reason it will be necessary to weigh each wheel position
of the motorhome to give a clear indication of exactly how the weight of the motorhome is distributed.
Instructions and diagrams are presented on the following pages. When the total weight and the weight on each
axle is known, the tire load data chart in this manual will show the correct cold infl ation pressure per tire for
each axle.
There are two important factors to consider when loading the motorhome: total weight and balance. When
loading heavy objects keep them as low as possible, preferably on the fl oor or below in storage compartments.
Load weight must be distributed as evenly as possible.
The following is an explanation of commonly used weight abbreviations:
• Gross Vehicle Weight Rating (GVWR): Maximum permissible weight of this motorhome. GVWR is
equal to or greater than the sum of UVW plus CCC.
• Unloaded Vehicle Weight (UVW): Weight of this motorhome as built at factory with full fuel, engine oil
and coolants. UVW does not include cargo, fresh water, LP-Gas, occupants or dealer installed accessories.
• Cargo Carrying Capacity (CCC): Equal to GVWR minus each of the following: UVW, full fresh
potable water weight (including water heater), full LP-Gas weight, and SCWR. Tongue weight of towed
vehicle and dealer installed equipment will reduce CCC.
• Gross Combination Weight Rating (GCWR): The maximum allowable loaded weight of this
motorhome and any towed trailer or towed vehicle.
• Gross Axle Weight Rating (GAWR): Load-carrying capacity specifi ed by manufacturer of a single axle
system, as measured at tire ground interfaces.
• Sleeping Capacity Weight Rating (SCWR): The manufacturer’s designated number of sleeping positions
multiplied by 154 lbs.
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