RV Trip Planning Discussions

Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > Trailer Towing and Tow Vehicles Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 07-07-2020, 10:57 AM   #1
Junior Member
 
Join Date: Jul 2020
Posts: 3
SRW or DRW

I was certain this has been discussed. We have a 2020 Keystone 3570FWLFT 39'6" 14,000 GVW. I already realize I will need a one ton to pull this. Was wondering if the dully was absolutely necessary.
__________________

falcon404 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-07-2020, 11:07 AM   #2
Senior Member
 
jacknife's Avatar
 
Join Date: Sep 2013
Posts: 1,108
Quote:
Originally Posted by falcon404 View Post
I was certain this has been discussed. We have a 2020 Keystone 3570FWLFT 39'6" 14,000 GVW. I already realize I will need a one ton to pull this. Was wondering if the dully was absolutely necessary.


I have pulled a 14000 k for 7 yrs with an SRW . never a problem . The frames on new trucks are much stiffer then in the past giving much more stability . Probably have about 60, 000 miles on the truck just towing .
That is one of the reasons l do not want a heavier trailer . I donít want a dually. As long as you have good tires and suspension you are good to go .
__________________

jacknife is offline   Reply With Quote
Old 07-07-2020, 11:10 AM   #3
Junior Member
 
Join Date: Mar 2020
Posts: 15
'Absolutely necessary' is a relative term depending on who you're speaking with.

For me -- yes it would be absolutely necessary to have the dual rear wheels. Increased payload, increased handling, increased safety (think blowout...), etc..
4thgenceli is offline   Reply With Quote
Old 07-07-2020, 11:11 AM   #4
Senior Member
 
450Donn's Avatar
 
Join Date: Jun 2006
Location: Dallas,OR
Posts: 4,344
That seems awfully light for a nearly 40 foot fiver. Heck my 6 foot fiver scalec at 13,500 pounds loaded ready to go.
As for SRW/DRW debate? With a new truck a 3500 SRW should be sufficient. Personally I loved my dually. Stability was the big reason. A dually will be more stable a platform hands down. But lets do the numbers. 14K GVWR? Typical fiver has between 18 and 25% of their weight as pin weight. Accepted figure is 20% so, 20% of 14,000 pounds is 2800 pounds. Add hitch of 200 pounds, that means you can expect to carry a minimum of 3000 pounds directly over your rear axle. In my case my fiver had 3500 pounds as pin weight. You can estimate a long bed crew cab diesel truck will weigh 8000 pounds ready to go full of fuel and passangers. So at minimum your truck ready to go hitched to your proposed fiver will need to carry 11-11,500 pounds going down the road.
Does that make any sense?

Uhhhh. Just,looked that fiver up. It has 4 slides and the GVWR is actually over 16,400 pounds once you add the pin weight. At that the pin weight will be well over 3500 pounds. Sorry, your in dually terratory
__________________
Don and Lorri
Resident Dummy.
450Donn is online now   Reply With Quote
Old 07-07-2020, 12:12 PM   #5
Senior Member
 
tuffr2's Avatar
 
Join Date: Sep 2012
Location: Palm Coast Florida
Posts: 8,164
If that 5th wheel has a GVWR of 14,000 lbs. a new SRW truck is needed.

But if the GVWR is 16,400 lbs. then you need a DRW truck.

I had a 2012 F-450 and now a 2017 F-250. Both trucks kinda drive the same around town but the dually tows a lot better.
tuffr2 is online now   Reply With Quote
Old 07-07-2020, 01:24 PM   #6
Senior Member
 
Join Date: Feb 2019
Posts: 380
The biggest daily-drivability issue with a DRW is the turning radius on the long bed. But if you are looking at a long bed anyway, which I really like having when hooking up a fiver, you might as well get six wheels. I love my DRW and don't mind it for daily driving, except the turning radius, which is the same on an SRW long bed anyway. If you really need or want a standard box, the brand new trucks might be sufficient to tow your load. You would need to see the sticker on the specific truck and weigh the fiver to be sure.
jjackrash is offline   Reply With Quote
Old 07-07-2020, 02:06 PM   #7
Senior Member
 
Rhagfo's Avatar
 
Join Date: Aug 2013
Posts: 814
Quote:
Originally Posted by 450Donn View Post
That seems awfully light for a nearly 40 foot fiver. Heck my 6 foot fiver scalec at 13,500 pounds loaded ready to go.
As for SRW/DRW debate? With a new truck a 3500 SRW should be sufficient. Personally I loved my dually. Stability was the big reason. A dually will be more stable a platform hands down. But lets do the numbers. 14K GVWR? Typical fiver has between 18 and 25% of their weight as pin weight. Accepted figure is 20% so, 20% of 14,000 pounds is 2800 pounds. Add hitch of 200 pounds, that means you can expect to carry a minimum of 3000 pounds directly over your rear axle. In my case my fiver had 3500 pounds as pin weight. You can estimate a long bed crew cab diesel truck will weigh 8000 pounds ready to go full of fuel and passangers. So at minimum your truck ready to go hitched to your proposed fiver will need to carry 11-11,500 pounds going down the road.
Does that make any sense?

Uhhhh. Just,looked that fiver up. It has 4 slides and the GVWR is actually over 16,400 pounds once you add the pin weight. At that the pin weight will be well over 3500 pounds. Sorry, your in dually terratory
Keystone list the GVWR at 14,000#, that is with a 2,541# payload. Unless you are buying a 2020 350/3500 SRW look closely at TV GVWR and payload. Ram has had a SRW GVWR of 12,300# since 2013, Ford and GM stayed near 11,500 until 2019 or 2020.
__________________
Russ & Paula, Portland, OR. The Beagle Belle.
2016 Ram Laramie 3500 DRW Aisin 4X4 14,000# GVWR.
2005 Keystone Copper Canyon 293FWSLS Rear Kitchen 12,360 GVWR
Rhagfo is offline   Reply With Quote
Old 07-07-2020, 05:28 PM   #8
Member
 
Join Date: Sep 2018
Posts: 50
Ford also sells the f450/550 in the standard truck size. IDK if you can still get them in srw, but if so, one of those might be an option.
Saying that, I think your in dually range. I'd still look at the 450. Ford's dually actually has a wider front suspension track and turns pretty tight for a big truck.
6_Riders is online now   Reply With Quote
Old 07-07-2020, 08:43 PM   #9
Moderator Emeritus
 
TXiceman's Avatar


 
Vintage RV Owners Club
Texas Boomers Club
Oklahoma Boomers Club
Ford Super Duty Owner
Join Date: Aug 2000
Location: Full Time, TX Home Base
Posts: 18,515
Blog Entries: 21
The question has a very simple answer. Know the loaded pin weight of the trailer (estimate at 20% of the trailer GVWR, not dry weight) and the paylaod capacity of the truck. The payload capacity has to be more than the pin weight.

DOn't listen to the dealer or others about towing big with a SRW truck. Learn the terms and understand them.

Ken
__________________
Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Travel with one Standard Schnauzer and one small Timneh African Gray Parrot
TXiceman is online now   Reply With Quote
Old 07-07-2020, 08:59 PM   #10
Senior Member
 
Rhagfo's Avatar
 
Join Date: Aug 2013
Posts: 814
Quote:
Originally Posted by TXiceman View Post
The question has a very simple answer. Know the loaded pin weight of the trailer (estimate at 20% of the trailer GVWR, not dry weight) and the paylaod capacity of the truck. The payload capacity has to be more than the pin weight.

DOn't listen to the dealer or others about towing big with a SRW truck. Learn the terms and understand them.

Ken

The payload has to be larger than the pin to account for passengers, stuff carried in TV and hitch, that could be close to, or more than 1,000#.
__________________
Russ & Paula, Portland, OR. The Beagle Belle.
2016 Ram Laramie 3500 DRW Aisin 4X4 14,000# GVWR.
2005 Keystone Copper Canyon 293FWSLS Rear Kitchen 12,360 GVWR
Rhagfo is offline   Reply With Quote
Old 07-07-2020, 09:58 PM   #11
Member
 
Join Date: Jan 2008
Location: NW Arizona, Kenai Peninsula
Posts: 44
The recurrent theme in these discussions: Take It To The Limit, and then some.
Tee Jay is offline   Reply With Quote
Old 07-08-2020, 06:57 AM   #12
Senior Member
 
Join Date: Jul 2018
Location: Ridge Spring, SC
Posts: 116
Tire load

I towed my 375rks Sierra 15500 lb gvwr with a srw 2006 Ram 3500 mega cab. I was almost maxed out on rear gawr. It towed ok until I got into a cross winds. I did not believe I needed a drw truck. My pin weight was 1900 lbs in the brochure. Once I weight it 2500lbs. So I bought a 2017 F350 drw. What a difference. I now have a 9900 lb rear gawr. Srw trucks max out at 7000 lbs rear gawr. You cannot get around max tire capacity. You need extra capacity for a hitch, fuel, passengers and stuff. You just can't max out your pin weight. I moved some stuff in my basement to my front compartment and added slide toppers. Now I am at 2780 pin weight. Also F450s have a lower load capacity due to the truck being heavier. F350 has more load capacity.
Dieselguy4 is offline   Reply With Quote
Old 07-08-2020, 07:38 AM   #13
Senior Member
 
tuffr2's Avatar
 
Join Date: Sep 2012
Location: Palm Coast Florida
Posts: 8,164
Agree with Dieselguy4 - the trucks rear axle on the new trucks are close to or exceed the tire rating.

My SRW truck's 'E' rated tires are good for 3,415lbs. each or 6,830lbs for two. So in this case a 7,000lb axle does exceed the tires.

Misc info. A SRW truck empty will have approx 3,000lbs on the rear axle/tires.

A DRW truck empty will have 4,000lbs on the rear axle/tires.

The DRW truck with a 9,900 lb. axle is a big advantage over SRW truck's.
tuffr2 is online now   Reply With Quote
Old 07-08-2020, 11:18 AM   #14
Senior Member
 
Join Date: May 2005
Location: Carlos, Texas
Posts: 1,465
I've had both. If you can get a DRW do it. It is a night and day difference. But do so only if you really need it. Remember to consider the rest of the time you are using it. Proper maintenance and driving habits and equipment for the conditions will get you very far safely. I just downsized back to a SRW 1500 from a DRW 3500 4x4 monster. I could immediately tell the difference but I also downsized to a 2500# itty bitty TT. It just wasn't practical to have such a big one any more. You;'ll have two more tires to buy.


BTW, the one time I did get a leak in a rear tire, the full tire held it up and it only went down to 40 psi and stopped leaking. That was sure handy. I wasn't hauling anything at the time. That means you will have to check them often. A low tire might not show itself easily.
__________________

charliez is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Buying new TV, final decission SRW or DRW RetiringSoon Trailer Towing and Tow Vehicles Discussion 10 08-29-2010 11:17 AM
2008 F-350 or F-450 DRW or SRW? M&S Norrell Trailer Towing and Tow Vehicles Discussion 28 01-13-2008 04:23 PM
To SRW or DRW that is the question? 96PSD Trailer Towing and Tow Vehicles Discussion 14 04-27-2007 10:33 PM
SRW or DRW to Tow Legacy 328 Trap Trailer Towing and Tow Vehicles Discussion 7 03-20-2006 04:44 PM
New truck question - SRW or DRW? Mick9064 Truck Camper Discussion 49 03-11-2005 12:57 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 08:26 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×