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Dump fuel for max tow?

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Old 11-08-2018, 08:20 AM
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Originally Posted by marshallr
200 lbs is nothing for limited use. I wouldn't want to drive any truck loaded right up to the max allowable on a consistent basis. Even being over by a few hundred pounds isn't going to cause catastrophic failure or create a safety issue. That would only be 5-10% over depending on the truck. But driving consistently at even 80-90% of your limit will lead to premature wear.
200 / 7050 = 2.8%.

IMO, that doesn't seem like a significant deviation; whether you're at 100% of GVWR or at 103% of it, you're still going to need to adjust your driving accordingly (especially if you've concurrently gone from 35% to 75% of GCWR). I wouldn't want to make a habit of it, but on an occasional basis, I'd be comfortable at 103% of GVWR in a well-maintained F-150.

I am neither a vehicle engineer nor a DMV employee, so your results may vary,
Old 11-08-2018, 09:50 AM
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Originally Posted by kbroderick
200 / 7050 = 2.8%.

IMO, that doesn't seem like a significant deviation; whether you're at 100% of GVWR or at 103% of it, you're still going to need to adjust your driving accordingly (especially if you've concurrently gone from 35% to 75% of GCWR). I wouldn't want to make a habit of it, but on an occasional basis, I'd be comfortable at 103% of GVWR in a well-maintained F-150....,
True, but 200lbs over payload capacity is considerably more.
Assume a payload capacity of, say, 1,700 lbs, then the OP would be close to 12% over. That's not insignificant.
Old 11-08-2018, 10:30 AM
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Originally Posted by schmenke
True, but 200lbs over payload capacity is considerably more.
Assume a payload capacity of, say, 1,700 lbs, then the OP would be close to 12% over. That's not insignificant.

Except that 'payload' is a meaningless number, the goal is to not be over GVWR which is +/- 7000lb (depending on your model/engine/drivetrain/etc). So you're 12% over a meaningless number but 3% over the number that means something.
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Old 11-08-2018, 10:38 AM
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Originally Posted by 11screw50
Except that 'payload' is a meaningless number....
???

Payload capacity is the one parameter that I strive to stay within.
Old 11-08-2018, 10:50 AM
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Originally Posted by schmenke
???

Payload capacity is the one parameter that I strive to stay within.
How do you determine if you are under payload or not? That's nearly impossible to do accurately. You would have to have 1st weighed the truck bone stock with a full tank of fuel and no occupants to verify the sticker is correct. Then you would have to weigh everything you put in the truck, mods you put on the truck, subtract anything you take out of the truck, and weigh tongue weight of a trailer....If you load the truck down then weigh it, then you are actually striving to stay within the GVWR, not the payload capacity.
Old 11-09-2018, 12:12 PM
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Originally Posted by jp360cj
How do you determine if you are under payload or not? That's nearly impossible to do accurately. You would have to have 1st weighed the truck bone stock with a full tank of fuel and no occupants to verify the sticker is correct. Then you would have to weigh everything you put in the truck, mods you put on the truck, subtract anything you take out of the truck, and weigh tongue weight of a trailer....If you load the truck down then weigh it, then you are actually striving to stay within the GVWR, not the payload capacity.
You do realize the "payload capacity" is not a true rating? It is solely based on GVWR. That is the rating that matters. Along with GCWR, GFAWR, GRAWR, and Hitch ratings.
Old 11-09-2018, 01:00 PM
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Originally Posted by SixShooter14
You do realize the "payload capacity" is not a true rating? It is solely based on GVWR. That is the rating that matters. Along with GCWR, GFAWR, GRAWR, and Hitch ratings.
Yep. that was the point I was trying to make
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Old 11-16-2018, 02:00 AM
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Originally Posted by jp360cj
You would have to have 1st weighed the truck bone stock with a full tank of fuel and no occupants to verify the sticker is correct.
I'm fairly certain, in a court of law, you are good with what is stated on the mfg's certification stickers, as the law is why they are there.
Old 11-16-2018, 02:40 AM
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Originally Posted by 2018LLB4x2
...but I should be able to use an additional 200 lbs part of which would be driver to allow for the needed weight to transfer to the truck for towing near capacity.
If you want to get technical, you need to take into account WHERE you have removed the weight. 200lbs from the gas tank is weight that goes to BOTH axles, so you wouldn't get 200Lb additional tongue weight.

You also would be adding weight in and above the bed, while the tank resides below the bed, so you are also changing the center of gravity.

If you are going to hit the highway at 75mph, all other drivers be damned, I'd say no to this proposition. However, if you are going to take it easy, give extra room between you and the vehicle ahead, take more time to make lane changes and navigate corners, I'd say you will be no worse for wear, except for the extra wear of being at max payload.

If the two trailers stacked raises them well above the roof line, take into account the higher center of gravity. I've seen two trucks with rooftop tents in which the drivers failed to take into account the change in handling a high center of gravity can inflict upon even a large truck. I can't even imaging having to explain that my truck ate it because of a damn tent.



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