op wrote:
BTW, the Hemi 6.4 will suck down fuel a lot heavier than the CTD engine, but between the 6-7K more $$$ and the cost of diesel and DEF I couldn't see getting one in a 2500. If the CTD rig came with as much or more load capacity I may of looked at them closer. Probably if you towed a huge amount of miles the CTD would be a better choice.
The Hemi and the Cummins can have the same RAWR numbers. The Cummins adds all the weight to the trucks front axle with little to non weight to the trucks rear axle so both will have similar payloads we use out here in the real world.
Those payloads on your trucks tire placard are a GVWR based payload which isn't used for any legal weight issues.
Also the tire sticker numbers are not on all trucks prior to the '05-'06 era...but on all trucks after I believe the '06 era.
Example only; ... the 2500 Ram 6.4 Hemi or 6.7 Cummins truck may have a 6500 RAWR and have a rear axle weight in the 3000 range which leaves around 3500 lb for a payload. RAWR includes tires/wheels/brakes and rear suspension.