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Old 10-01-2020, 02:58 PM   #1
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Got a bunch of weights on my new 5er

Picked u the 5er a few weeks ago and went straight to the scales. I was surprised that the actual weights were pretty close to what Forest River put on their website. Got the trailer all loaded up with all our kit (and then some) and got another weight. Then filled up the fresh tank and got one more data point. We'll probably always travel with a full fresh tank (fresh tank is behind the axles on our trailer). Right at GVWR for the truck. 800 lbs left on the rear truck axles. And 1105 lbs to spare on the trailer GVWR. Seems like a good combo.

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Old 10-01-2020, 03:32 PM   #2
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We have never traveled with a full fresh water tank. No sense in pulling the extra weight. When we needed to use the water tank we would wait and fill the tank near our destination. Our current 5er has the water tank centered of the 3 axles.

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Old 10-01-2020, 03:35 PM   #3
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Wait a minute. Are you telling me you didn't have to buy a Freightliner M2 to tow your moderately sized fifth wheel?
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Old 10-01-2020, 04:53 PM   #4
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Originally Posted by TXiceman View Post
We have never traveled with a full fresh water tank. No sense in pulling the extra weight. When we needed to use the water tank we would wait and fill the tank near our destination. Our current 5er has the water tank centered of the 3 axles.

Ken
Extra weight does not affect MPG so not a concern
What is/was a concern...whether destination had good clean water and/or any water at all
Up until 2008 we rarely traveled with much more then 10 gallons in fresh water tank for those roadside lunches/potty breaks
Then ONE time we got to destination and the water main had broke....took 2 days to repair and 3 days of flushing/testing before water service was restored
Had to go buy/haul water
NOPE...never again
FULL Fresh water tank and only use pump/tank exclusively (that's another story why....just think FLOOD)
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Old 10-01-2020, 08:36 PM   #5
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I also travel with a full 80 gallons for the same reasons Old-Biscuit mentioned.
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Old 10-01-2020, 09:48 PM   #6
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Extra weight does affect fuel economy if you are doing a lot of steep grade towing or there is a lot of stop and go included in your trip. Hard to rationalize that it takes the same amount of energy to get 15,000# moving compared to 5,000# or dragging the same up a mountain. Might be hard to measure differences towing on a flat smooth highway. I'm guessing the big rigs with enclosed trailers don't get the same fuel economy empty compared to a full load.
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Old 10-02-2020, 04:11 AM   #7
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Good on ya!! When we bought our 5th wheel toyhauler, all I knew was that the truck was rated for 18k trailer. I did not know or understand payload. I did know about GAWR and how to tag the truck.

Our 2013 RAM 2500 Tradesman SO diesel 68RFE CC SB 4x4 pulled out 11,500 trailer well. Our next trailer will be heavier, and I replaced the 2500 with a 2020 RAM 3500 Tradesman HO Aisin CC LB 4x4. Now I have enough capacity for any trailer I will buy. After weighing the truck, filled fuel ready to travel, with me, I have 5890 rear available. When I buy a newer and (probably) heavier trailer I will weigh it and tag my truck appropriately.

NC DOT officers explicitly told me that as long as GAWR and tires are not exceeded, all is well.
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Old 10-02-2020, 07:09 AM   #8
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My Pinnacle went from 2445 brochure listed pin to 3120 actual after loading up for a month long trip. The additional weight includes adding a Splendide washer dryer in the front closet. We gained about 1500 pounds over the listed total weight. We weighed in at 14,700 total. The GVWR for the Pinnacle is 15,500.

Always good to know your weights but it seems to not be important to many as I have looked around the campground we are in. A guy that was next to us for a week or so was a full timer and was telling me he was well over 16K total weight for his fiver. His truck was a GMC 2500 short bed. I'm not a weight police type but I think there is something not right about that.
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Old 10-03-2020, 07:43 AM   #9
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Old Biscuit - you are usually pretty good but saying weight does not matter is a big bogus lie.
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Old 10-03-2020, 05:03 PM   #10
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Weight has little bearing on MPG

Weight has little bearing on MPG. Yup, we measured it many times. I am sure there is some infinite difference when a trailer has an extra 1000 lbs of water from moderately full tanks, but I could never reproduce a measurable difference on various trips.

As an example, my current truck (in my signature) hauling the 13 000lb loaded 5er has the same fuel economy as when we hauled the 6000 lb loaded 26'TT which was 24" to 28" shorter.

Aerodynamics has way,way more to do with MPG than a few thousand lbs once you hit a combination (GCVWR) of 13 000lbs or more.

For the same reasons as mentioned, we often leave with a full tank, no searching for reliable,clean water when we get there.
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Old 10-03-2020, 06:08 PM   #11
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Quote:
Originally Posted by tuffr2 View Post
Old Biscuit - you are usually pretty good but saying weight does not matter is a big bogus lie.
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Originally Posted by kdauto View Post
Weight has little bearing on MPG. Yup, we measured it many times. I am sure there is some infinite difference when a trailer has an extra 1000 lbs of water from moderately full tanks, but I could never reproduce a measurable difference on various trips.

As an example, my current truck (in my signature) hauling the 13 000lb loaded 5er has the same fuel economy as when we hauled the 6000 lb loaded 26'TT which was 24" to 28" shorter.

Aerodynamics has way,way more to do with MPG than a few thousand lbs once you hit a combination (GCVWR) of 13 000lbs or more.

For the same reasons as mentioned, we often leave with a full tank, no searching for reliable,clean water when we get there.

There will be a difference between a 5,000# trailer and a 15,000# trailer, but the difference between a empty water tank and a full water tank is negligible. The big killer is air resistance.
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Old 10-04-2020, 12:15 PM   #12
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I just was wheeling a wheelbarrow up an incline in the yard. I can wheel and empty wheelbarrow up the incline easy..
But fill it with rocks it takes a lot more energy. Same as a truck solo going up a mountain. The truck weighs 8,000lbs say. It goes up the mountain on it's own ok. Now add a 12,000lb trailer. Now you have 20,000lbs going up the mountain. You will definitely get less mpg than just the truck.
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Old 10-04-2020, 03:29 PM   #13
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I just was wheeling a wheelbarrow up an incline in the yard. I can wheel and empty wheelbarrow up the incline easy..
But fill it with rocks it takes a lot more energy. Same as a truck solo going up a mountain. The truck weighs 8,000lbs say. It goes up the mountain on it's own ok. Now add a 12,000lb trailer. Now you have 20,000lbs going up the mountain. You will definitely get less mpg than just the truck.

I think if you read OB's reply to TXiceman, he was referring to Freshwater tank being full or empty (which means usually less than 1,000 lbs additional weight) when towing.
Not a truck towing a 12,000 lb trailer versus a truck solo.
My TV doesn't see much difference between towing 14,500 lbs compared to towing 15,500 lbs.
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Old 10-04-2020, 04:32 PM   #14
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I think if you read OB's reply to TXiceman, he was referring to Freshwater tank being full or empty (which means usually less than 1,000 lbs additional weight) when towing.
Not a truck towing a 12,000 lb trailer versus a truck solo.
My TV doesn't see much difference between towing 14,500 lbs compared to towing 15,500 lbs.
You saved me some typing. I also explained what little (non-measurable) difference it makes for my setup.
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