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Old 06-05-2012, 06:59 PM   #57
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Originally Posted by Ramblin View Post
My advice: Don't do it. Why? Because being able to predict how your system will react to common failures is key to surviving them. That predictibility is built into the system by the manufacturers through their safety testing, and is used to set the limits. Being overloaded negates the manufacturers testing, takes much of the predictibility out of the equasion.
Thank you, Ramblin, for your well-worded reply to this! Like others I have wondered about the reasons why not to exceed a vehicle's published towing limitations. I appreciate knowing a little more of the "why" to it in addition to the unthinkable consequences already mentioned.

I am a stickler for rules/regulations, so I have not been tempted to go over weight. I did, however, push my previous tow vehicle to within 100 lbs. of the stated maximums (my WD hitch had to be configured "just so" to correctly balance and not overload RAWR, tongue weight, etc.). I took the fully loaded setup to the scale and watched what we put in it like a hawk to keep it from going over. My current tow vehicle has much more room to spare, making me breath a little easier when towing.
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Old 06-09-2012, 08:09 AM   #58
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May be a bit off topic, so I appoligize in advance. Having done quite a bit of research for our situation, I've noticed that for the identical truck (year, model, engine, suspension, options etc) the weight ratings are different for a California spec'd truck vs. 49 state. What gives?? Didn't think engineering principals were different in CA?? Haha....
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Old 06-09-2012, 08:21 AM   #59
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Originally Posted by Vintagercr View Post
May be a bit off topic, so I appoligize in advance. Having done quite a bit of research for our situation, I've noticed that for the identical truck (year, model, engine, suspension, options etc) the weight ratings are different for a California spec'd truck vs. 49 state. What gives?? Didn't think engineering principals were different in CA?? Haha....
From an engineer's perspective, here's one possibility. If the California trucks operate under more stringent emissions standards, they may have higher exhaust gas recirculation (EGR) rates. In the case of diesels that use cooled EGR, this greater mass flow of exhaust gas that must be cooled places a greater load on the cooling system. Therefore, engineers may lower the GCWR of California trucks to avoid overheating problems.

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Old 06-10-2012, 11:57 AM   #60
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Originally Posted by GuyWhoTris View Post
Here are the numbers

Truck
GCWR - 14,000 lbs
Total weight w passengers and cargo - 6771 lbs
Max towing - 7900 lbs

Trailer
Current estimate
Total weight - 7899 lbs including cargo and 5 gal black water. Assumed 500 lbs cargo.

Total rig weight : 14760

I've never weighed the rig so don't have actual weights. I am using published numbers, real passenger weights and an estimate of trailer cargo that I think is high for most of my travels. I am looking at other options suggested here. Am I missing something on my current calculations?

Thanks!
Please, do the right thing and weigh your rig. Never use estimation. Every thing you need to know and especially knowing how to weigh your rig will be found at:

Fifth Wheel St.
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Old 06-10-2012, 07:17 PM   #61
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Quote:
Originally Posted by GuyWhoTris View Post
Here are the numbers

Truck
GCWR - 14,000 lbs
Total weight w passengers and cargo - 6771 lbs
Max towing - 7900 lbs

Trailer
Current estimate
Total weight - 7899 lbs including cargo and 5 gal black water. Assumed 500 lbs cargo.

Total rig weight : 14760

I've never weighed the rig so don't have actual weights. I am using published numbers, real passenger weights and an estimate of trailer cargo that I think is high for most of my travels. I am looking at other options suggested here. Am I missing something on my current calculations?

Thanks!
According to your numbers, you are 760 over the GCWR. Where did your max towing of 7900 come from? You cannot use a manufacturer's specs for towing. The actual formula is the GCWR minus the weight of the tow vehicle when ready to tow. Therefore, 14000 - 6771 = an actual tow capacity of 7229. Looks like you need more truck or less trailer.
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Old 06-10-2012, 09:27 PM   #62
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I concluded that I was overweight without going to the scales. I bought a GMC 2500HD diesel last weekend. I want to get to the scales to know for sure what I've got but I have no concerns about weight now.
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Old 06-25-2012, 09:12 PM   #63
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Glad to hear you got a good tow vehicle now.
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