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Vehicle towing capacity vs payload database

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  • Vehicle towing capacity vs payload database

    Below is a spreadsheet which calculates the actual payload of various popular 4WDs given the actual trailer mass when fully loaded (ATM).

    The reason for making this spreadsheet is because there appears to be a common misconception that the Ford Ranger is the best towing vehicle due to its 3.5T towing capacity. However, as the spreadsheet will demonstrate, if you accessorize the vehicle heavily, the weight capacity left for passengers and luggage gets close to zero.

    The spreadsheet allows you to enter the actual trailer weight and you can then sort which vehicle gives the most available payload. Enter the weight into the RED CELL

    https://docs.google.com/spreadsheets...it?usp=sharing

    If you find any errors, please post below. The list isn't complete so feel free to put the specs in your comments below:

    GCM = Gross Combination Mass = GVM+GTM
    GVM = Gross Vehicle Mass
    GTM = Gross Trailer Mass = ATM-TBM
    ATM = Aggregate Trailer Mass = GTM+TBM
    TBM = Tow Ball Mass
    Payload = Accessories, luggage, passengers
    amts
    Ninja Poster.
    Last edited by amts; 08-02-2017, 04:57 PM.

  • #2
    Nice work Andrew - only recently crunched these numbers for my old man and his mate and they were gobsmacked! (both in Rangers...)
    Cheers
    Micheal.

    2008 GXL D4D Auto. GOING... GOING... GONE
    2015 GXL 1GD Auto. And it begins again...

    Comment


    • #3
      Yeah, the Rangers are the worst.
      However I believe that the TBM does not need to be 10% of ATM. Some vehicles have the TBM rated at less than 10%. I have not included this yet in the spreadsheet.

      Here is an interesting article that talks about tow ball mass. A research done in 2009 shows that a 6-8% TBM is optimum.

      The researchers concluded that the best way to minimise trailer yaw inertia – the tendency for the trailer to sway laterally - was to position any trailer load at or near the centre of gravity. Loads fore and aft of that position increased the likelihood of towing instability.
      The optimum nose mass (ball load) was found to be 6-8 percent of the trailer’s gross mass. This is quite different from the common ‘rule of thumb’ relied on in Australia and the USA, where ball loads of 10-15 percent are common.


      Provided the measurement didn’t increase the ball weight beyond eight percent of trailer gross mass the greater the distance between the coupling and the axle, the more stable the trailer was in test manoeuvres.
      If the TBM can be decreased, it would sure help with increasing the payload on the vehicle.

      Comment


      • #4
        Interested how accurate this is, my 2016 n80 hilux has a 6500gcm and 3500 towing capacity

        Comment


        • #5
          What model to do you have?
          Cheers
          Micheal.

          2008 GXL D4D Auto. GOING... GOING... GONE
          2015 GXL 1GD Auto. And it begins again...

          Comment


          • #6
            2016 n80 dual cab manual 2.8 SR5 tare 2035, agg 3000, gcm 6500 - from my rego papers

            Comment


            • #7
              That GCM isnt correct - what does the plate on the ute say?
              Cheers
              Micheal.

              2008 GXL D4D Auto. GOING... GOING... GONE
              2015 GXL 1GD Auto. And it begins again...

              Comment


              • #8
                only thing i could find was inside passenger door which only says gvm 3000, no gcm or tow capacity

                Comment


                • #9
                  Toyota's specs don't agree with the rego papers.

                  Comment


                  • #10
                    True, I just looked at that. Bit of a score for me if I ever get pulled over. I wonder if they made the error as a one off or not. I did get the winch factory fitted which in turn came with a spring upgrade, I wouldn't have thought that would have made a difference to anything.

                    Comment


                    • #11
                      I have a 2016 SR Dualcab, had spring upgrade it gave GVM of 3500kg but did not alter GCM which is 5680kg from memory if not it is 5860kg. I have the auto which is only 3200kg towing.
                      Cheers
                      Charlie

                      Comment


                      • #12
                        TBM

                        I think that given the trailer sway control systems now available on some vehicles and many caravans it looks more and more like anything over say 8% on the towball is overkill.

                        Comment


                        • #13
                          Perhaps, but the concern is that all of these 20 foot plus palace-on-wheels vans that the owners then go an add a heap of weight to the rear (or front for that mater), then tow with a vehicle that is arguably too light.

                          I know of one man that broke his A frame because of too much weight when he was towing it behind an F250 - same guy now drives a ranger...
                          Cheers
                          Micheal.

                          2008 GXL D4D Auto. GOING... GOING... GONE
                          2015 GXL 1GD Auto. And it begins again...

                          Comment


                          • #14
                            Hey mate. I've been doing some research into a new tow vehicle for a van we are yet to buy and have done some calculations myself. Comparing them with your sheet there are some differences which I think are attributable to:
                            - some vehicles have GVM penalties at max tow (i.e. Patrol Y62 loses 130kg off the GVM when hitching 3.5t)
                            - the Payload @ ATM calculation looks like it's only accurate when there is a GCM penalty where the GVM+ATM>GCM (i.e. DMAX has 500kg before GVM is maxed when towing 3.5t, so the TBW of 350kg is absorbed by that without reducing the payload. But where the GVM+ATM=GCM then the TBW needs to come off the vehicle payload - so the Prado 150 at max tow of 2.5t only has a vehicle payload of 425kg; GVM 2990 - Kerb 2315 leaves 675kg payload with no tow, add 2.5T tow with 250kg TBW then payload comes down to 425kg.
                            - there are also a couple of lines where the Payload @ ATM is more than the Payload @ GVM, which is not possible.

                            Of course this is just my understanding so if it helps then happy days. I'm always also happy to be corrected if I have it wrong .

                            Cheers
                            Click image for larger version

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                            Comment


                            • #15
                              Here is a link to my calcs: https://docs.google.com/spreadsheets...it?usp=sharing
                              Last edited by proteus; 02-03-2017, 03:08 AM.

                              Comment

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