Porsche Boxster Owner's Manual page 237

Example for determining the combined weight of
occupants and cargo
Vehicle Load Capacity
f The combined weight of occupants and cargo
should never exceed the weight shown on the
tire plate in the vehicle.
Please see the chapter "TIRE PRESSURE PLA-
TE" on Page 275.
f Never exceed the number of passengers
shown on the tire pressure plate in the vehicle.
Determining the combined weight of
occupants and cargo:
f Add the weight of all occupants and then add
the total luggage weight (figure).
Steps for determining correct load limit
1. Locate the statement "The combined weight of
occupants and cargo should never exceed XXX
pounds" on your vehicle's placard (depending
on the date of manufacture).
2. Determine the combined weight of the driver
and passengers that will be riding in your vehi-
cle.
3. Subtract the combined weight of the driver and
passengers from XXX kilograms or XXX
pounds.
4. The resulting figure equals the available
amount of cargo and luggage load capacity.
For example, if the "XXX" amount equals
400 lbs. and there will be two - 150 lb passen-
gers in your vehicle, the amount of available
cargo and luggage load capacity is 100 lbs.
(400 - 300 (2 x 150) = 100 lbs.).
5. Determine the combined weight of luggage
and cargo being loaded on the vehicle. That
weight may not safely exceed the available car-
go and luggage load capacity calculated in
Step 4.
Practical Tips, Emergency Service
235