THen depending upon the what and where you are towing, a given rig might have multiple tow ratings based on the need of the end user. For me, I want a rig that will tow at a given wt up at last a 30% grade. Guess what, my Dmax rated at 23500 has a 23-25% max grade pull at 20K lbs. So for me any how, it should not be rated at 23500, maybe 17-18K or there abouts! Meanwhile, my old 96 K3500 SW with the ever dissed 6.5td, had the ability at 20K to go upa 30% grade due to the MUCH lower overall gearing, torque multiplication etc.....but had a whopping 12500 GCWR! hmmmmmmmmm so at the end of the day, which is the better tow rig?
OH, but the dmax at 20K will pull a 3-5% grade at 60 plus mph, the 6.5 maybe 35-40 mph! so again, which is the better tow rig?!?!?!?
One needs to base a tow rig on WHAT THEY will do, go etc. What works for me maybe different than what works/preforms the way you want it to work!
Reality is, some rigs, even my dmax CCdually, might not be able to tow at its rated GCWR, if you have a given rig at GVWR/max axle ratings before hooking up a trailer, reality is, said rig is incapable of towing a trailer unless it has 0% hitch wt, which most of us would argue is unsafe.
At the end of the day, which ratings are really the one(s) one should follow?
05 Chev CC D/A LS Dooley
92 Navistar dump truck, 7.3L 7 sp, 4.33 gears with a Detroit no spin
00 Chev C2500, V5700, 4L80E, 4.10, base truck, no options!
92 Red-e-haul 12K equipment trailer
3 Single axle utility trailers