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Towing a [email protected] trailer with Model S

Discussion in 'Model S' started by ElectricLove, Apr 30, 2018.

  1. ElectricLove

    ElectricLove Member

    Joined:
    May 28, 2013
    Messages:
    461
    So, I've been sitting on this thought for a while and after much online research and not finding much great definitive info I decided to just dive in.

    I drive a Model S P85DL and installed a tow hitch on it and 4-flat wiring harness. It has the staggered 21" turbines and we generally get around 350Wh/mi efficiency, far less when driving with fun on the mind :)

    The camping trailer we bought is a [email protected] by the company Little Guy and it has about as low a Cd as we can find, it's also around 1500lbs which is within my comfort zone for the car.

    Clearly this car is "capable" of towing a heavy load but my main concern is going to be range, I'm excited to see what the set up is going to be capable of and the adventure of figuring out supercharging with a trailer.

    Our drive home from picking it up was 50 miles and our efficiency on that trio was right at 600Wh/mi... pretty rough and will only leave us with about 120mi range... On this trip we did 55mph for half and 65mph for half the trip, it was somewhat hilly and it was a really windy day too, though I hadn't checked if head or tail wind... fingers crossed it was headwind ;)

    I'll post our set up and efficiency numbers here for our trips in this rig and hope it helps others to decide if it's right for them or not.

    Just to try and stave off the "you know who's", I know these cars don't have a "tow rating" and I'm not publicly advocating for anyone else to put a hitch on their S and do anything but haul a few bicycles around with it!

    More photos and data to come...
     

    Attached Files:

  2. BerTX

    BerTX Supporting Member

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    May 2, 2014
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    3,501
    Location:
    Texas/Washington
    Likely you don't find many people talking about towing with a Model S because most people feel uncomfortable documenting a violation of warranty that would likely give Tesla a reason not to honor the drive unit / battery coverage. Not saying owners don't do it, just that some feel that they might need that warranty, and better to be safe and not talk about it here.

    And BTW, the [email protected] has a pretty bad Cd. No better than a box.
     
  3. ElectricLove

    ElectricLove Member

    Joined:
    May 28, 2013
    Messages:
    461
    In that case, let me be clear, I have never and will never tow a trailer with my Model S and any/all claims made about such on this thread are entirely theoretical.

    I have a hitch installed for the sole purpose of hauling my bicycle.
     
    • Like x 1
  4. arcus

    arcus Active Member

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    Location:
    Denton, TX
    I like the photo-realistic 3D render you have attached, too :p
     
  5. KJD

    KJD Supporting Member

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    Dec 14, 2013
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    SLC, UT
    Looking forward to seeing more data with your setup. What exact model Little Guy do you have anyhow ? It looks like they have quite a number to choose from on the web site.

    Just for kicks you might want to compare your numbers to some on the X forum.
    Model X Travel Trailer Consumption Analysis
     
  6. sranger

    sranger Member

    Joined:
    Dec 22, 2013
    Messages:
    101
    Location:
    Kennesaw, GA
    Any update? I have a [email protected] S Model and was thinking about trying it.

    Send private message if you do not want to post here.

    I can tell you that the [email protected] is not very are inspire of it's looks. We current tow it with a Lincoln MKC and it get between 12-15 mpg vs a typical 25 mpg on the highway.
     
  7. roblab

    roblab Active Member

    Joined:
    Jul 15, 2008
    Messages:
    3,070
    Location:
    Angwin (Napa Valley) CA
    Yeah, I have a (small) trailer and I have towed it. As with any warranty concerns, they have to prove your towing was the cause of the failure, and I have only towed about twice. I put my chunky trike in the trailer. I don't think the less than 30 miles towing affects any of the 78,000 miles on my car.

    As long as you know how to pull a trailer and don't stress the car (like trying to tow something up the I-5 "Grapevine" at 80 mph... doesn't the law say something like 55??) you'll be fine. Just use uncommon sense.
     
  8. vesder21

    vesder21 Member

    Joined:
    Dec 20, 2015
    Messages:
    65
    Location:
    Ohio
    How did you run your flat 4 wiring. (Any links to the product you purchases?)

    I bought the Tekonsha clip over (non splice) harness but it has to be hooked up to a 12v so debating on trying to do the same as you.
     

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