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Open Roads Forum  >  Towing

 > Towing speed

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Turtle n Peeps

California

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Posted: 08/09/19 09:17am Link  |  Quote  |  Print  |  Notify Moderator

My last vacation a month ago, and the ones before it, I towed the speed limit.

That was anywhere from 55 MPH to 80 MPH. I burned like 370 gallons of #2 in 4,200 miles in 3 weeks.

That's the way I have always done it and until I retire will continue to do it. It works for me.


~ Too many freaks & not enough circuses ~


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1320Fastback

Vista, Ca

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Posted: 08/09/19 06:38pm Link  |  Quote  |  Print  |  Notify Moderator

Our last trip was 5,231 miles and we nailed down 14.68mpg overall. Inside California I tow at 55-62mph and in free states usually around 65mph.


1992 D250 Cummins, 5spd, 4"' straight piped, sensors deleted, airbags, DAP injectors, 18cm.


goducks10

There

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Posted: 08/09/19 07:07pm Link  |  Quote  |  Print  |  Notify Moderator

Just got back from a short 450 mile RT. Hwy and interstate. Ran 55-60 in the 55 zones, 65 in the 65 zones and on the interstate ran 65-70.
All in Oregon towing a 9500 lb TT with a 2500 gasser Ram.

36guy

Princeton

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Posted: 08/09/19 10:15pm Link  |  Quote  |  Print  |  Notify Moderator

55-60 tops for me, the thing I missed in every post on this topic is the ability to stop, or avoid an encounter on the road. Many of you know, many don't, electric brakes aren't the most reliable or best method for a panic stop,and I don't push my rig to that point. I have enough power to tow fast as I want, but a lifetime of driving truck and very fast cars teaches one to understand how quickly things get out of hand at speed.

Crodad

Lafayette, LA

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Posted: 08/12/19 07:36am Link  |  Quote  |  Print  |  Notify Moderator

I like to go around 65 on the Interstates. My main reason is not wanting to change lanes very often. You can usually just stay in your lane and have a relaxing cruise. I don't end the day all stressed out.


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humblerb

houston

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Posted: 08/15/19 10:05am Link  |  Quote  |  Print  |  Notify Moderator

Mickeyfan0805 wrote:

In the great lakes region many interstates are 70 (some even 75). I will range from 65-69 when in those areas. Interestingly, fuel mileage consistently works otherwise in my rig. I will do 10-15% better at 65mph than at 55mph. I'm not well-versed enough to know why, but I presume it must have something to do with the gearing on the transmission.

You are now well-versed. It has to do with either higher RPMs in a lower gear or lugging (too low RPMs). Both will burn more gas than when you are at whatever speed is optimum for your rig.

humblerb

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Posted: 08/15/19 10:15am Link  |  Quote  |  Print  |  Notify Moderator

Our TT tires were rated at 65. I always tried to stay just below 65.
The 5th Wheel tires now are rated to 75 or 80, somewhere like that.
I really like the 65 pace, so I continue there with the FW.
The post on braking has as much to do with it as the travel time does.

allen8106

Burrton. KS

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Posted: 08/15/19 10:55am Link  |  Quote  |  Print  |  Notify Moderator

My max speed is 65 due to max speed rating of tires on the 5ver. However, even if I had higher rated tires I doubt I would drive any faster. The roads are just too rough for any faster speeds in my opinion.


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afidel

Cleveland

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Posted: 08/15/19 08:23pm Link  |  Quote  |  Print  |  Notify Moderator

68 is my normal cruise setting, that way I'm not playing leapfrog with the truckers that are governed to 65 but I'm not going too fast either. Over the last 28,200 miles I've averaged 11.02 mpg with a worst tank efficiency of 8.25 mpg when fighting a 30-40 mph headwind in Florida of all places.


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TravelinDog

Nevada

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Posted: 08/16/19 05:00pm Link  |  Quote  |  Print  |  Notify Moderator

With my '97 gasser with 4.10 gears I would stay at about 60mph because the truck was old and only got 7-8 mpg when towing. Engine turning at about 2,900 rpm.
Now that I have a 2500 CTD I still only tow at 65mph because I can keep it in 5th gear overdrive all day long and still get 14mpg with the same trailer. Only turning about 1900 rpm.
I could go MUCH faster, but why?
As someone else mentioned being able to stop and keep control of the truck and trailer in the event of a blow-out or some other situation is more important than getting somewhere faster and putting your life or your family or others on the road at risk. Saving a few minutes or an hour on longer trips is just not worth the risk.

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