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Optomistic Towing Capacity

Discussion in 'Towing' started by sinjun, Jan 27, 2010.

  1. Jan 27, 2010 at 8:36 AM
    #1
    sinjun

    sinjun [OP] Member

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    Derek
    Calgary, Canada
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    Mickey Thompson ATZ Tires, Spiffy new headlights
    Trying to figure out how the different manufacturers come to decide how they spec their tow ratings. Not going to look at full size trucks but to compate 3 comparible mid size. I have the Toyota Tacoma TRD Sport with the 4.0L V6 and have a trailer sitting out in the back 40 that I am dying to start using so I can put all of my doubts to rest but this does make me curious

    Toyota Tacoma 4.0 V6 TRD w/ towing package - 236hp/266Tq @ 6500lbs
    Nissan Frontier 4.0 V6 w/ towing package - 261hp/281Tq @ 6100lbs
    GMC Canyon 5.3 V8 w/towing package - 300hp/320Tq @ 6000lbs

    Toyota has the lowest power ratings but the highest capacity, what gives?
     
  2. Jan 27, 2010 at 8:37 AM
    #2
    Jester243

    Jester243 mod status????

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    Dan
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    Power doesn't equal towing capacity.
     
  3. Jan 27, 2010 at 8:37 AM
    #3
    macgyver

    macgyver Well-Known Member

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    Brad
    Canton, GA
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    You also have to factory in weight distribution, stability, and braking
     
  4. Jan 27, 2010 at 12:36 PM
    #4
    lezavw90

    lezavw90 Active Member

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    Wasn't there an article on here that talked about tow rating? How there currently is no industry standard to set tow limits. So manufacturers can put pretty much what they want, and the limits they set are based on what the competition has theirs set at.
    The article also stated that in the coming years there will be an industry standard, and that there will be certain criteria and tests the vehicles will go through (ie, starting and accelerating on an incline was one test).
     
  5. Jan 31, 2010 at 12:23 AM
    #5
    Scott K

    Scott K Well-Known Member

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    Coquitlam, BC, Canada
    Amsoil Synthetic ASL 5w30 Oil, Amsoil ATL Fuel Efficient ATF, Amsoil Severe Gear 75w90 in front/rear diffs & transfer case.
    Also consider other things like cooling - transmission & engine cooling capacity, battery & alternator ratings for trailers with electric brakes, transmission gearing & gears, rear differential gearing, all contribute to a tow rating on top of the trucks ability to reduce sway and handle the load.

    Also, consider the weight of the vehicle in question. Consider the Tacoma weighs something like 400-500 pounds less than the Frontier so it has better to equivilent power to weight ratio's, and also consider that power at the crank is not representative neccessarily of power at the rear wheels. Peak HP numbers also do not tell you about efficiency at other RPM's i.e. flat torque curves, etc.. Toyota is known for producing efficient drive trains compared to the competition.
    There are all sorts of little factors to consider aside from just a few numbers on paper. That is why there are more than just power ratings mentioned in specs.
     
  6. Feb 2, 2010 at 5:22 PM
    #6
    Isthatahemi

    Isthatahemi Well-Known Member

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    BFG AT's, Weathertechs, Hoppy's brake controller.
    2 main considerations are -
    1. Safety
    2. Ability to shed excess heat from the trans, engine, steering system, and brakes.
     
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