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DW-gray's avatar
DW-gray
Explorer
Mar 21, 2015

The Benefits of Weighing Your Tow Rig Twice

So often, RVers will pull up to a scale and get the weight of the tow vehicle's front and rear axles, and the trailer axles. They drive away, and later sit down with their calculator to come up with few safety weight numbers. It either looks good or they may discover a truck axle that's overloaded or maybe they exceed the gross combination weight rating (GCWR). They think that's it and that's all they need to know.

RV Safety and Education Foundation (RVSEF) data indicates that 60 percent of all tow vehicles on the road exceed one or more weight safety ratings. "Many of these trucks exceed all of their ratings," said Walter Cannon, executive director of RVSEF.

The following RV rig reports are based on a real towing combination with a fifth wheel that speaks more volumes than a bunch of words. (Conventional tow rigs may require up to three weigh-ins when using weight distribution systems.)

(The examples below are not my rig.)


Here is all one can know with one weigh-in.





Here is the report with two weigh-ins.

  • I guess I am approaching it from a full timers prospective. I really don't want to make a special trip to a scale, and I sure don't want to be unhooking and hooking up my "home" in some truck stop parking lot.

    I visit Flying-J or Pilot stations all the time to get fuel anyway. It only takes a few minutes, no matter if I am towing or not, to pull over the scale.
  • "If it was a CAT scale and you had positioned your rig correctly the print-out they give you should have had the axle weights."

    This^^^^. Steer, Drive, Trailer weights provided separately.

    Answers all the questions one needs to know without multiple positioning.

    I did this once with the DW helping me (she drove while I waited at the CAT counter)....spent $40 (for multiple weighs) chasing a 135# discrepancy only to realize that, ahem, that was the difference between me being the driver (vs. off-scale observer) and the DW being the driver.

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