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tomkaren13's avatar
tomkaren13
Explorer
Apr 25, 2014

shorter vs longer on a long trip

Does a lighter shorter TT make a great difference in milage and/or any other differences?

We currently have a 30' TT that the build weight is 5500 lb. Planning on a trip from here FL to around NY state. Trip will be at least a month long. Thinking of possibly getting a small 22' trailer that has a build weight of 3372 lb, just for this trip. Should be able to sell it for what we can buy it. Out TV is fine with either one.
  • If you are in the 9.5 to 10.5 mpg range that is what most people are getting.

    Frontal area is a huge factor over weight, I recently got 7.8 mpg into a very stout head wind and 11 plus coming home with a tail wind. Same roads four days later. I am sure others have similar tales to tell.

    Since I live in the flat area of the country I cannot say how the weight figure into gas mileage in the mountains.
  • The length isn’t going to make much difference in mileage, as said air resistance is the culprit. The weight comes into play when starting from a dead stop and especially if you’re climbing mountains, then you will notice the difference. I like small because they’re much more maneuverable and the ease of driving scenic roads and finding camp sites. And I don’t like reservations or planning which gas station, parking lot, etc. I can get into. So if I had the option of reselling the shorter TT for the same money I’d choose it. But then I pull a 16’ TT so I'm bias.
  • Mr Bojangles wrote:
    Unfortunately you will find that it is the "WIND RESISTANCE" surface of TT that is more responsible for MPG while towing.

    I mean that a 3200lb trailer will eat as much gas as A 5500LB trailer in general. That is with everything the same. Even one axle Vs two axles, if everything else the same. Thirty feet Vs. Twenty-two will not noticeably effect MPG in my humble (out of ignorance of math) opinion.

    There are experts on this forum who may step in here now and give formula's if one persist in debating.


    X2 Wind resistance is the main determining factor. You are towing a relatively large flat area through the the wind, the size of that surface is more important than the weight.
  • Go comfortable and forget about the very few dollars you might save by going a few feet shorter.
  • Unfortunately you will find that it is the "WIND RESISTANCE" surface of TT that is more responsible for MPG while towing.

    I mean that a 3200lb trailer will eat as much gas as A 5500LB trailer in general. That is with everything the same. Even one axle Vs two axles, if everything else the same. Thirty feet Vs. Twenty-two will not noticeably effect MPG in my humble (out of ignorance of math) opinion.

    There are experts on this forum who may step in here now and give formula's if one persist in debating.