SKTLZ Posted April 26, 2016 Report Share Posted April 26, 2016 Probably old subject., new to rving... I'm looking at purchasing an 5er toyhauler and mating it with a 1 ton dually truck with diesel, i'm wondering what kinda mileage one could expect to get, considering hwy mileage..I would be cruising around 65/70 mph....2nd part what does everyone think bout running 16 inch vs 17.5 trailer tires.. thanks Robert Link to comment Share on other sites More sharing options...
GeorgiaHybrid Posted April 26, 2016 Report Share Posted April 26, 2016 A few things to know before you could get a decent guess. GVW of the trailer? Height and width of the trailer Make and engine of the truck Gearing on the rear end Transmission type As far as tires go, most here will tell you to run Goodyear G114's on 17.5 wheels. With the weight a typical toyhauler will have on it, you will eventually have 17.5's so you might as well start there. 2017 Kenworth T6802015 DRV 38RSSA Elite Suites2016 Smart Prime Link to comment Share on other sites More sharing options...
I'mdonewiththis forum Posted April 26, 2016 Report Share Posted April 26, 2016 Most diesel pick ups seem to get pretty close to the same mileage from what I have read. The biggest killer is speed. I get about 14+ mpg at 55 mph, about 12 mpg at 60 mph, and about 10 mpg at 65 mph. Weight doesn't seem to be as much of a factor as you would think. The frontal area is what is the problem. Link to comment Share on other sites More sharing options...
Wayfarer Posted April 26, 2016 Report Share Posted April 26, 2016 I would guess you would be looking at about 12 mpg. My Ram 2015 3500 dually gets 12 at best towing between 60 and 65. Weight doesn't appear to effect the mileage as much as you would think. I think it is more the fact that you have a large wind sail that you are pulling. My RV weighs about 14000 lbs. Tom Link to comment Share on other sites More sharing options...
gjhunter01 Posted April 27, 2016 Report Share Posted April 27, 2016 I agree with the above post, speed hurts your mileage big time. I get 11.5 mpg at 60 mph with my 06 Chevy duramax and 34' fifth wheel at 24k gross weight. Any head wind will drop into the 10's. At 60 MPH, its a comfortable drive for me whereas at 70 I am stressed out and tense at the end of the day. Greg Link to comment Share on other sites More sharing options...
nana25k Posted April 27, 2016 Report Share Posted April 27, 2016 Our 07 Dodge 3500 averaged 12/13 mpg at 55/60. We rarely drove any faster. Higher speeds saw our mpg drop in propotion to the speed increase. Of course we were fortunate enough to have the 5.9. Ron & LindaClass of 20072000 Monaco Diplomat 2005 Honda Element"Do what you can, with what you have, where you are" Theodore Roosevelt"We can't control the wind, but we can adjust our sail""When man gave up his freedom to roam the earth, he gave up his soul for a conditioned ego that is bound by time and the fear of losing its attachments." Link to comment Share on other sites More sharing options...
alan0043 Posted April 27, 2016 Report Share Posted April 27, 2016 Probably old subject., new to rving... I'm looking at purchasing an 5er toyhauler and mating it with a 1 ton dually truck with diesel, i'm wondering what kinda mileage one could expect to get, considering hwy mileage..I would be cruising around 65/70 mph....2nd part what does everyone think bout running 16 inch vs 17.5 trailer tires.. thanks Robert Hello Robert, What brand of toy hauler are you thinking about ? Do you know the GVWR of the trailer that you what ? These questions being answered could help make sure you will have the right truck for the job. You want to pull your trailer as safe as possible. Wheel size for the trailer would be best at 17.5". Al 2012 Volvo VNL 630 w/ I-Shift; D13 engine; " Veeger " Redwood, model 3401R ; 5th Wheel Trailer, " Dead Wood " 2006 Smart Car " Killer Frog " Link to comment Share on other sites More sharing options...
Heavymetal Posted April 27, 2016 Report Share Posted April 27, 2016 I tow a 26,500k fifth wheel with a 2016 ford with a 4:30 diff and average about 8.4 mpg. It is a 6.7 4x4 crew cab dully. Rick 2016 Western Star 5700xe (Pathfinder) DD15 555hp w/12 speed automatic 3:05 diffs 2005 Newmar Mountain Aire 38RLPK 2 Great Danes Link to comment Share on other sites More sharing options...
lonewolftx Posted April 27, 2016 Report Share Posted April 27, 2016 I tow a 26,500k fifth wheel with a 2016 ford with a 4:30 diff and average about 8.4 mpg. It is a 6.7 4x4 crew cab dully. Rick That is one freaking heavy 5th Wheel. What is in it that makes it that heavy of a load as you are close (or at) the GCWR of 35,000 lbs. What hitch are you using for that load? I thought my 5th wheel TH was heavy with 2 scooters in the back at 43' and 18.5k lbs. I haul with the same setup '16 Ford F350, 6.7, 4.3, 4x4 dually. We're not here for a LONG TIME, we're here for a GOOD TIME! HOOH! '16 F350 DRW PSD CCLB, LKR Fx4, WH Platinum Tri, 4.3LSD, MR, PullRite OE 25K 5th, High CT, EB Heater, Tailgate Step, Recon RL's, Air Lift System, TruXcedo Lopro, DZ TG Assist, KC Lights, Pop&Lock TG, Cable Lock,'16 Fuzion 420 17.5k Link to comment Share on other sites More sharing options...
Heavymetal Posted April 27, 2016 Report Share Posted April 27, 2016 That is one freaking heavy 5th Wheel. What is in it that makes it that heavy of a load as you are close (or at) the GCWR of 35,000 lbs. What hitch are you using for that load? I thought my 5th wheel TH was heavy with 2 scooters in the back at 43' and 18.5k lbs. I haul with the same setup '16 Ford F350, 6.7, 4.3, 4x4 dually. I pull a New Horizons 40' solid cherry cabinets, residential Appl. 16" frame and so on. Just ordered a new 45' that weighs in at 33k I have to go to a class 8 tractor for this one. The max towing on your truck is 31,200 so I am way below. You can't even tell the 26,500 is behind you,17.5 H rated tires on triple IS axles with 14" anti-lock disc brakes will drag my truck to a stop. I use a comfort ride 30k air cell hitch with a 8k pin weight limit. 2016 Western Star 5700xe (Pathfinder) DD15 555hp w/12 speed automatic 3:05 diffs 2005 Newmar Mountain Aire 38RLPK 2 Great Danes Link to comment Share on other sites More sharing options...
Daveh Posted April 27, 2016 Report Share Posted April 27, 2016 We pull a 15,500 lb fifth wheel with a 2015 Ford F350 Dually 4 x 4, I try to go at 60 but we often travel 65. We seem to be somewhere between 11 and 12 mpg when averaged over along period and all wind road conditions. Dave and Lana Hasper Link to comment Share on other sites More sharing options...
lonewolftx Posted April 28, 2016 Report Share Posted April 28, 2016 I pull a New Horizons 40' solid cherry cabinets, residential Appl. 16" frame and so on. Just ordered a new 45' that weighs in at 33k I have to go to a class 8 tractor for this one. The max towing on your truck is 31,200 so I am way below. You can't even tell the 26,500 is behind you,17.5 H rated tires on triple IS axles with 14" anti-lock disc brakes will drag my truck to a stop. I use a comfort ride 30k air cell hitch with a 8k pin weight limit. No the max towing on my '16 truck, per Ford, is 26,500 (31,200 is for F450) w/ a 5th wheel if I had a Hitch with a 26k rating but only have 24K (which is enough) or 19,000 conventional bumper pull. GCWR is 35,000. . . I guess you have an F450 then. We're not here for a LONG TIME, we're here for a GOOD TIME! HOOH! '16 F350 DRW PSD CCLB, LKR Fx4, WH Platinum Tri, 4.3LSD, MR, PullRite OE 25K 5th, High CT, EB Heater, Tailgate Step, Recon RL's, Air Lift System, TruXcedo Lopro, DZ TG Assist, KC Lights, Pop&Lock TG, Cable Lock,'16 Fuzion 420 17.5k Link to comment Share on other sites More sharing options...
Heavymetal Posted April 28, 2016 Report Share Posted April 28, 2016 No the max towing on my '16 truck, per Ford, is 26,500 (31,200 is for F450) w/ a 5th wheel if I had a Hitch with a 26k rating but only have 24K (which is enough) or 19,000 conventional bumper pull. GCWR is 35,000. . . I guess you have an 450. The Ford option 535 (max tow package) upgrades the 350 to the 450 suspension by adding the wide track front axle, 17" wheels and the 4:30 differential. The only reason ford limits the fifth wheel weight to 26,500 is because that is the largest hitch that they offer as an option. Note the #4 after the 26,500 weight now look at thier notes copied below. If you notice the 450 fifth wheel capacity is also only 26,500 even no the GCW ups to 40,400. # 4 note applies here also due to fords fifth wheel hitch option. (1) Maximum loaded trailer weight requires weight-distributing hitch. See page 28 for additional information. only. (4) 5th-wheel towing capacity limited by availability of 26.5K hitch. (5) Gooseneck towing capacity. (2) Pickup Box Delete Option. (6) F-450 calculated with SAE J2807 method. (3) Available with High-Capacity Trailer Tow Package 2016 Western Star 5700xe (Pathfinder) DD15 555hp w/12 speed automatic 3:05 diffs 2005 Newmar Mountain Aire 38RLPK 2 Great Danes Link to comment Share on other sites More sharing options...
Heavymetal Posted April 28, 2016 Report Share Posted April 28, 2016 No the max towing on my '16 truck, per Ford, is 26,500 (31,200 is for F450) w/ a 5th wheel if I had a Hitch with a 26k rating but only have 24K (which is enough) or 19,000 conventional bumper pull. GCWR is 35,000. . . I guess you have an F450 then. This from fords F-450 brochure Best-in-Class GCWR Maximum 31,200-lb. tow rating* Best-in-class 40,400-lb. gross combination weight rating (GCWR)* F-450 with upgraded High-Capacity F-350 Trailer Tow Package with features such as a wide-track front axle, suspension, tires and towing gear, the same that’s standard on the F-450 *When properly equipped. Class is Full-Size Pickups over 8,500 lbs. GVWR. 2016 Western Star 5700xe (Pathfinder) DD15 555hp w/12 speed automatic 3:05 diffs 2005 Newmar Mountain Aire 38RLPK 2 Great Danes Link to comment Share on other sites More sharing options...
mocroc Posted April 28, 2016 Report Share Posted April 28, 2016 I would guess you would be looking at about 12 mpg. My Ram 2015 3500 dually gets 12 at best towing between 60 and 65. Weight doesn't appear to effect the mileage as much as you would think. I think it is more the fact that you have a large wind sail that you are pulling. My RV weighs about 14000 lbs. Tom X2. When we had our 36' Toyhauler 5er, we found the same results of at least 12mpg. When we pulled in Mexico where the ave speed was 50 mph or less we ave at least 15mpg. Also have a Dodge Ram diesel. My Toyhauler weighed 19,000 loaded. rocmoc n AZ/Fld/Baja Link to comment Share on other sites More sharing options...
GlennWest Posted April 29, 2016 Report Share Posted April 29, 2016 I was getting 7 with my dually. That running 65. Haven't towed yet with the HDT. Will Monday. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
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