Cummins12V98
on the road
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DW-gray wrote:Cummins12V98 wrote:Just double/triple towed for the first time this last week. 4 adults in cab with full tank. Went to AZ Bike week.
If I'm reading that correctly, the front axle is 5780 and the rear axle is 9860.
Does that not mean that the rear axle exceeds the GAWR of 9750 by 110 and the GVWR of 14000 by 1640?
I could be wrong, but it appears the trailer may be exceeding the GVWR and GAWR too.
Too bad you didn't weigh your truck alone. You could have obtained a full 13-point weight safety report at the Fifth Wheel Street website.
Yes I am over 110# on my rear axle, remove the two passengers I would be at the RAWR. Not too worried about the 110# since I have lots of capacity left on the rear tires. I am within all other weights that actually matter.
GVWR of 14K is just a number to keep the truck in Class 3 for licensing and insurance purposes. Just take my factory front axle weight for example of about 5,200# +- and add the RAWR of 9,750#, wala I am magically OVER the 14K number by 950#.
For me to be "legal" I just need 16K tonnage on my truck.
My "average" hand calc mileage was 8.3 traveling from Palm Springs, CA to Scottsdale, AZ and back. I towed 60 in CA and 65-67 in AZ. If it were not for the ST MC trailer tires I would have towed 75 in AZ.
The RV is "rated at 21K and actually weighs 23K. I changed out the kingpin bolts to large 3/4" frame bolts. I had MORryde look my suspension over when they did my 3" risers and they said I was well within their specs even tho I have 17,500# + on the RV axles.
DRV rates their RV's by the kingpin bolts.
![[image]](http://i.imgur.com/aIFF4qXl.jpg)
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"
"HeavyWeight" B&W RVK3600
2016 MobileSuites 39TKSB3 highly "Elited" In the stable
2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD
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Lwiddis
Southern California :(
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"I am within all other weights that actually matter."
Famous last words? Cuzz if I'm over, it doesn't matter?
Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad
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avvidclif1
Texas
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Joined: 02/10/2012
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Lwiddis wrote:"I am within all other weights that actually matter."
Famous last words? Cuzz if I'm over, it doesn't matter?
I guess the frame doesn't count toward GVWR, only hitch and axle.
Clif & Millie
2009 Ford F350 SRW CC Lariat 6.4 Diesel
2015 Heartland Cyclone HD CY3418 Toy Hauler
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LT 29
Michigan
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Hello Everyone!
I have a question for the experts/seasoned towers.
I have a 2012 Chevy 3500 HD, i'm under on everything except the GCWR (over by 1600lb). Should i be concerned or just continue towing?
Thank you in advance!!
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DW-gray
Lompoc, CA
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LT 29 wrote:Hello Everyone!
I have a question for the experts/seasoned towers.
I have a 2012 Chevy 3500 HD, i'm under on everything except the GCWR (over by 1600lb). Should i be concerned or just continue towing?
Thank you in advance!!
If you are certain that the GCWR is the only weight that you are exceeding by 1600 pounds, and you are certain that the weight of your truck's GVWR is underweight, I do not think you should be concerned. The most important truck weight rating that you should not exceed is the GVWR.
Dave Gray
RV Safety Educator & Consultant
08 Dodge Ram 3500 4X4, Dually, 6.7L Diesel, 09 Heartland Cyclone 4012
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Cummins12V98
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GVWR is usually not as important as axle ratings since many times they equal tire capacity.
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DW-gray
Lompoc, CA
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Cummins12V98 wrote:GVWR is usually not as important as axle ratings since many times they equal tire capacity.
Sorry, but I do not agree. If you would take notice, the GVWR will be exceeded before the sum of the GAWRs for normal towing setup. All owner's manuals clearly warn not to exceed the GVWR and GAWRs. Braking capacity is based on the GVWR, not the GAWRs.
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LT 29
Michigan
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Thank You for the reply's.. My GVWR is 11000 and i'm at about 10600.
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Cummins12V98
on the road
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DW-gray wrote:Cummins12V98 wrote:GVWR is usually not as important as axle ratings since many times they equal tire capacity.
Sorry, but I do not agree. If you would take notice, the GVWR will be exceeded before the sum of the GAWRs for normal towing setup. All owner's manuals clearly warn not to exceed the GVWR and GAWRs. Braking capacity is based on the GVWR, not the GAWRs.
Example, my RAM DRW is 14K GVWR. My RAWR is 9,750# my FAWR is 6,000#. If I load my rear axle to it's rating and don't load a single thing on my front axle I will be well over my GVWR. The 14k is to keep the truck in the class 3. If over that the insurance and licensing will be much higher. Another example the F450 is 14K. Rear axle weight will determine what can be safely towed with a 5er on most SRW's.
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DW-gray
Lompoc, CA
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Cummins12V98 wrote:DW-gray wrote:Cummins12V98 wrote:GVWR is usually not as important as axle ratings since many times they equal tire capacity.
Sorry, but I do not agree. If you would take notice, the GVWR will be exceeded before the sum of the GAWRs for normal towing setup. All owner's manuals clearly warn not to exceed the GVWR and GAWRs. Braking capacity is based on the GVWR, not the GAWRs.
Example, my RAM DRW is 14K GVWR. My RAWR is 9,750# my FAWR is 6,000#. If I load my rear axle to it's rating and don't load a single thing on my front axle I will be well over my GVWR. The 14k is to keep the truck in the class 3. If over that the insurance and licensing will be much higher. Another example the F450 is 14K. Rear axle weight will determine what can be safely towed with a 5er on most SRW's.
Your opinion does not line up with SAE J2807 methodology and the Federal Motor Vehicle Safety Standards, Title 49, Section 751.105. If you can provide a document supporting your opinion about the GVWR of 14K, please do so. I would very much like to read it.
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