ShinerBock wrote:
These are the two main reasons why I say raise the speed requirement which in turn would lower the tow ratings to a more reasonable number most pickup truck owners would tow with these trucks.   Plus since the J2807 doesn't have a long distance down hill braking test I wouldn't mind seeing some lower towing numbers on these vehicles.
The gradeability test is done on highway 68 in AZ climbing from 550ft to 3500ft in 11 miles.  It's a decent highway to use for such testing.  Very few 2500/3500 trucks towing 25Klb+ rigs can sustain 55mph up this grade.  Especially when its 115F!  Making the test 55mph minimum isn't real world.  I want tests that are inline with what the typical person would be experiencing.