DZRVR
Texas
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Joined: 06/15/2009
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I've read as much information as my brain can absorb to try to figure out if I'm ok with my setup. I just acquired an 07 Sierra 375qbq with empty weight of 11500 and loaded weight of 14110. I will mostly be towing it at a weight somewhere in between. The pin weight is 2100(unsure if loaded or unloaded). My tow vehicle is an 05 F250 Ford SuperDuty Diesel 4x4 with the towing package. The stock suspension is beefed up with factory overload springs. According to my vehicle's stamp, it has a GVWR of 10000lbs, Front GAWR of 5600lbs Rear GAWR of 6100lbs. I have upgraded the wheels/tires from stock 265/70/17's to 325/60/20's Load D. My registration says this is a 1 ton truck. What do ya'll think.
PS.
I towed this rig 250 miles with no problem but then the trip was mostly flat roads with an occassional climb here and there. The truck didn't squat much either.
* This post was
edited 11/06/09 03:14pm by DZRVR *
2005 F250 SuperDuty Powerstroke Diesel Lariat 4X4
2007 FR Sierra 375QBQ
2004 Shallowsport 21.5 Sport
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skipnchar
Topeka Kansas USA
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Joined: 12/17/2003
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Brochure pin weights are always for an empty trailer and will go up when it's loaded. The factory has no way of knowing how or how much you'd be loading your trailer. MOST people towing larger 5th wheels with a 3/4 ton truck are towing over their rated weight. Since the 250 and the 350 have the identical engine and drive lines it isn't a POWER issue it's a weight carrying issue. Good luck / skip
2004 F-250 SCREW Long Bed (new)
OR 2004 F-150 HD (85,000 towing miles)
Rockwood 8314SS 34' travel trailer
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mpfireman
Cook County Il
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Joined: 12/26/2003
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For one thing, you cannot change you OEM trucks GVWR, no matter what you do. Being a 4X4, you probably have a rear end of 4.10 when new, but by you installing the larger tires, you are in the 3.75 range now. Plus I would have preferred to see at least E rated tires, due to the fivers pin weight. Your biggest challenge will come when you start hitting the mountains, but staying on moderate hilly roads, you probably will be O.K
In short, you are and will be asking a lot out of your truck, but there are many out there that have the same setup. So at least you have a lot of company.
1998.5 Dodge Ram Quad Cab Cummins
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sue.t
Vancouver Island, BC, Canada
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Joined: 08/05/2004
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Also need to know the actual weight of your truck ... to know how much payload it can take on before the GVWR is exceeded.
In our case, we have a canoe or kayak or 2 loaded on our truck, plus firewood and maybe a trials bike ... so the available payload is reduced by all that, plus the humans and dogs riding in the cab.
With our 25' fifth wheel, and the stuff in the truck, our F-250 PSD 4x4 crewcab's GVWR is exceeded by a few hundred pounds.
sue t.
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PhilipB
MO
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Joined: 01/30/2004
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My rig wieghs around 11,000 loaded and we're well under GCWR, but about max on rear axle. My guess is you'll exceed rear axle weight rating once you load up. That being said, you'll be in the same camp as about 2/3 of those using 3/4 tons without any trouble.
As far as the big tires, I'm not a big fan for towing. Larger tires will make for taller final gearing. I went from stock 245's to 265's and like the looks, but it's not dramatic enough to effect towing.
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BobandPatB
Navarre, Florida
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Joined: 04/25/2009
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Give yourself some peace of mind and take it to a scale. CAT scales are easy to use, just bring a broom handle to reach the button. Weight the loaded truck - WITHOUT - trailer, and then come back with the trailer. You will now know the axle loads that you reall have. I don't know what your tires are good for or the wheels, but those thing have the loading on them. I do know that some of the big tires have good loading in load range D. I'll bet that you will find out that you are OKAY.
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jetboat
texas
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Joined: 12/08/2008
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They make weight ratings for every truck made.Most people understand them as do the dealers.However,all of us have seen truck/suv combos that we say,"theres no way",but there out there.Personaly,i would be thinking of a larger truck,and 4x4 have a lesser rating than standard trucks.
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DZRVR
Texas
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Joined: 06/15/2009
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Thanks for ya'lls replies. Received as much information as I had read already. Bottom line, seems I am overweight but cannot justify upgrading to a dually. Not practical as a commuter vehicle and not my liking. Although overweight, my truck handles well and have very minor squat. I'll just keep it slow and steady and I think I'll be alright. Power is not the problem but weight seems to be. Thanks to all.
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