Airstream 2007 Safari - Manual (Page 97)

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SPECIFICATIONS
Gross Vehicular Weight Rating (GVWR): is the maximum permissible weight of this
trailer when fully loaded. It includes all weight at the trailer axle(s) and tongue or pin.
Unit Base Vehicle Weight (UBW): is the dry weight of the base unit with bedroom
group and w/o options or fluids.
Net Carrying Capacity (NCC): is equal to GVWR minus UBW.
Gross Axle Weight Rating (GAWR): is the value specified as the load carrying capacity
of a single axle system, as measured at the tire-ground interfaces.
GAWR Gross Axle Weight Ratings are located on the manufacturing tag that is posi-
tioned on the roadside side sheet of your travel trailer.
Tire Size with Maximum Inflation Pressure Cold
ST 215-75 R14 - 50 psi
ST 225-75 R15 - 65 psi
PSI = Pounds per square inch.