In response to this thread, I did a search on Ford Super Duty F250/350 trucks from 2003 to 2013. All years have separate weight ratings for bumper vs 5th wheel. However, there seem to be inconsistencies. Looking at the same truck (crew cab, 4X4, V-10, 3:73 rear), for 2003-4, max weights are the same for bumper and 5th wheel. Then from 2005-10, axle ratio was changed to 4:10 (3:73 no longer available), but max weights varied from 1,400# to 1,600# more for 5th wheels than bumper, with same truck. Finally, for 2011-13, V-10 was eliminated for the V-8, but this time, for the same truck, weight capacity was lower by 100# for 5th wheels.
So I wrote to Ford, stating that I didn't understand why, for the same truck, the weight limit would be sometimes the same, sometimes more for 5th wheel, and sometimes less for 5th wheel. Logic tells me that the relationship should be the same, regardless of the equipment, so long as we are comparing apples with apples, with the only difference being the location of the hitch.
Will post results of inquiry, if and when I get one.
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.