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Open Roads Forum  >  Fifth-Wheels

 > Anyone pulling a Montana 3120 with a SRW short bed?

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jaycocamprs

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Posted: 03/04/21 07:19pm Link  |  Quote  |  Print  |  Notify Moderator

I wouldn't do it. Our Mountaineer is 10K dry, loaded just under 12K. The 05 DRW we had went 11K loaded. Now that was 2800# pin. The rest was stuff in truck, firewood, tools, us & the dog. I'm just not going to watch every pound of stuff I haul around. So that's why when bought the 18 truck it was DRW also.


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work2much

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Posted: 03/04/21 08:45pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

" If I recall the GVWR was 16,000. That makes for a 3200 pound pin."

So based on your formula I should have 4,200# pin since my GVWR is 21k. But why is my pin 6,000?

My RV actually weighs 24k and my pin percentage is 25%. So just because a number says XYZ that doesn't make it so!!!


Good point. Pin can be higher than 20% It can also depend on tanks. Our 90 gallon fresh tank is behind the axles so a full tank drops pin and empty fresh and full gray and blacks means a big jump in pin. Another reason why it's better to have more truck than less.


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ACZL

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Posted: 03/05/21 08:22am Link  |  Quote  |  Print  |  Notify Moderator

MFL wrote:

ACZL wrote:

IMO it's a no go. Truck should weigh in around 8600# +/-. Going by replies from others, the RV's dry weight is 14k and max of 16k. You will be at max capacity all the way around if not over on some. I had same truck, but when we upgraded RV's we were in same situation as you. Yes truck towed it fine and I loved the truck, but didn't like being right at max on everything. Dry weight of new coach was 14k and max was 16k. Fully loaded, pin was 3700, RV 16,000, total weight on truck 12,300, combo 24,600. Ended up getting a DRW 350 and night/day diff in towing. Yes the DRW sux in the snow, but for towing north of 15k max RV weight, you are in DRW territory.


Dry wt is just 12K with a large CCC, loaded GW likely 14-14.5K, kind of reason OP said the numbers fit.

Jerry


You are indeed correct. If however the dry weight is more (say closer to 14k) and figure at least 2,000# of "stuff" then that changes things I figure.Really have to look at dry & max weight of RV and kinda figure the mfr dry weights are not always 100% correct (same as mfr advertised pin weights). Like I mentioned in my 1st post, really thought our '15 SRW not only would be perhaps are last truck and able to tow pretty much anything, we simply ran out of numbers when we got the new RV. I wasn't too concerned about yanking it around here in NY or close by states, but heading to FL in summer and being over on tires just planted a gut feeling of not being comfy. So that's how we ended up w/ the DRW. Don't get me wrong, the DRW is awesome for towing the RV, but it does kinda stink for everyday running around and surely stinks in the winter. That's where our old SRW shined.....especially towing our 4 place V-nose close to 30' sled trailer. DRW, like a farm tractor give you a wider footprint and spreads the weight out on 4 tires rather than 2.


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Michelle.S

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Posted: 03/05/21 09:06am Link  |  Quote  |  Print  |  Notify Moderator

Everyone always says Duallys are no good in snow. When I was still working, my Dually was my "Go To Vehicle" during snow storms. Now I did have approx 700 or 800 pounds of sand bags in the box all behind the axles. I traveled 50 miles one way to work in Rochester, NY with Lake Effect from Lake Ontario. If roads were real bad, slow down and put it into 4 wheel high and motor on passing all the little 4x4 SUVs in the medium.


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topjimmy

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Posted: 03/05/21 09:26am Link  |  Quote  |  Print  |  Notify Moderator

you must be the only one who thinks they are fine in the snow[ all 3 of mine have sucked and they are even worse when taken out on the beach the hard sidewall tires do not help either .............quote=Michelle.S]Everyone always says Duallys are no good in snow. When I was still working, my Dually was my "Go To Vehicle" during snow storms. Now I did have approx 700 or 800 pounds of sand bags in the box all behind the axles. I traveled 50 miles one way to work in Rochester, NY with Lake Effect from Lake Ontario. If roads were real bad, slow down and put it into 4 wheel high and motor on passing all the little 4x4 SUVs in the medium.


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Cummins12V98

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Posted: 03/05/21 10:11am Link  |  Quote  |  Print  |  Notify Moderator

Michelle.S wrote:

Everyone always says Duallys are no good in snow. When I was still working, my Dually was my "Go To Vehicle" during snow storms. Now I did have approx 700 or 800 pounds of sand bags in the box all behind the axles. I traveled 50 miles one way to work in Rochester, NY with Lake Effect from Lake Ontario. If roads were real bad, slow down and put it into 4 wheel high and motor on passing all the little 4x4 SUVs in the medium.


My friend in NW WA has a 13 RAM DRW he uses for his Landscaping Business. I asked him how his truck did in the snow this winter.

"It handled awesome with 30psi in the rear tires doing my snow melt and sidewalk shoveling maintenance."


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rhagfo

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Posted: 03/05/21 12:54pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

Michelle.S wrote:

Everyone always says Duallys are no good in snow. When I was still working, my Dually was my "Go To Vehicle" during snow storms. Now I did have approx 700 or 800 pounds of sand bags in the box all behind the axles. I traveled 50 miles one way to work in Rochester, NY with Lake Effect from Lake Ontario. If roads were real bad, slow down and put it into 4 wheel high and motor on passing all the little 4x4 SUVs in the medium.


My friend in NW WA has a 13 RAM DRW he uses for his Landscaping Business. I asked him how his truck did in the snow this winter.

"It handled awesome with 30psi in the rear tires doing my snow melt and sidewalk shoveling maintenance."


It is those that run their DRW tires at 80 psi, because that is what is on the sidewall!


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Cummins12V98

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Posted: 03/05/21 04:57pm Link  |  Quote  |  Print  |  Notify Moderator

rhagfo wrote:

Cummins12V98 wrote:

Michelle.S wrote:

Everyone always says Duallys are no good in snow. When I was still working, my Dually was my "Go To Vehicle" during snow storms. Now I did have approx 700 or 800 pounds of sand bags in the box all behind the axles. I traveled 50 miles one way to work in Rochester, NY with Lake Effect from Lake Ontario. If roads were real bad, slow down and put it into 4 wheel high and motor on passing all the little 4x4 SUVs in the medium.


My friend in NW WA has a 13 RAM DRW he uses for his Landscaping Business. I asked him how his truck did in the snow this winter.

"It handled awesome with 30psi in the rear tires doing my snow melt and sidewalk shoveling maintenance."


It is those that run their DRW tires at 80 psi, because that is what is on the sidewall!


ZACTLY!!!

ACZL

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Posted: 03/06/21 06:13am Link  |  Quote  |  Print  |  Notify Moderator

I know this is getting off topic for OP, but I have 1400# of tube sand over axle, 60 psi in stock tires. Guess I could lower them more, but now that winter is winding down, no need to.

Cummins12V98

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Posted: 03/06/21 08:07am Link  |  Quote  |  Print  |  Notify Moderator

ACZL wrote:

I know this is getting off topic for OP, but I have 1400# of tube sand over axle, 60 psi in stock tires. Guess I could lower them more, but now that winter is winding down, no need to.


Even with 30-35 psi in the rears you would still have more carrying capacity than you have with the sand in the bed. I run 30 rears on my RAM DRW when not towing year round.

Take a look at your specific tire size and load range weight/inflation chart. I used to run less than 60 with 4,500# pin weight.

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