Topic: CONFUSION! Tire placard shows lower cargo than my payload (F350)

[taylorba1]

HELP! The Ford and GM dealers dont know.
With my camper and passengers, water, tiedowns, extra batts, and full tank of fuel I figure a 2008 F-350 crew long box diesel single rear wheel needs to be able to handle about 4100 lbs over its curb weight.  This works out (but barely) since the truck has a GVWR of 11400 lbs - CURB WT of 7300 lbs whhereich leaves a Gross Payload of 4100 lbs for everything except the bare truck.
ENTER THE TIRE PLACARD!!!
On the door jamb ( or pillar ) there is sticker (placard) that has tire pressures, number of passengers and a warning as follows:

THE COMBINED WEIGHT OF OCCUPANTS AND CARGO SHOULD NEVER EXCEED 3240 lbs.

Now this is a long ways from 4100 lbs. Even if you exclude 200 lbs of fuel it is still a long way from 3900 lbs payload.  Where does this descrepancy come from?  Does it mean the manufacturers are not putting tires capable of reaching the GVWR on the vehicles?
HELP I need to buy a truck and I am not keen on a dually, but if I go by the TIRE PLACARD it seems I must get one.

[rrocket]

Is that figure per tire?  So you'd multiply it by two for the axle?  I'm not sure though...

*EDIT* Sorry...though it was a dually...

[rrocket]

I talked to our trucker and he seems to think it's PER TIRE.  We have an F250 here, and that thing can carry 4,000lbs.  He suspects an F350 should carry 5-6,000lbs.

Are you TOWING the camper..or is it one of those that go in the bed??