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Old 12-03-2015, 06:04 AM   #1
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Cruise speed

Just wondering what cruise speed you do when towing. My old TT I would tow 65-68. My just done first trip towing the big beast at 60 mph and got 13.2 mpg. I know the g rated tires can tow way faster but this just seemed to be my trucks sweet spot

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Old 12-03-2015, 06:23 AM   #2
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I always shoot for the posted speed limit. Any TT should be able to be pulled at the posted speed limit. However, always adjust your speed on the conditions. As you have found out it's more about the TV and where that sweet spot is. I found that my 04' gasser was 60-65mph any more and it was down shifting too often even for the slightest grade. Now with my new 2015 Duramax it don't care. Maintaining 75mph is not an issue.

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Old 12-03-2015, 08:00 AM   #3
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We always cruise between 65 and 70. We see no need to hurry, but will speed up to get around slower traffic when needed. Our mileage so far, has been more than exceptional. When we're not towing we average around 18 and 19 mph. When we tow we get about 14 mph. We have no problem going up hill, and the engine never rev'd higher than 2,200 rpm.
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Old 12-03-2015, 08:56 AM   #4
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Usually no faster than 60 mph, even if the posted speed limit is 75. I've had to pass many slo-pokes on the road during my life. Now it's payback time.

Seriously, I get better fuel mileage if I keep the speed down, plus I want to keep my RAM pickup for a long time, so not pushing the transmission too hard will hopefully help me achieve that goal.
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Old 12-03-2015, 09:27 AM   #5
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Generally, and depending on conditions, we're typically cruising right around 70 mph. But we spend a lot of time down around 60-65 too. Just depends. We have a wide variety of roads we travel. Some roads say 75, but if you go that fast, you're going to be looking for dental implants (bad roads).

ST tires are generally rated to 65 mph (based on arbitrary import restrictions from what I understand), so I don't like to go too fast. And it's a lot of mass to deal with if something happens, regardless of the tire rating.

I haven't really found the sweet spot for my truck yet though. I seem to get about the same mileage from 60-70 with slight improvements over and under that range.

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Old 12-03-2015, 09:37 AM   #6
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AAA has state/province information on towing speed and trailer brakes. I'm sure there are many other reference points too.
"I just go where I'm towed to"

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Old 12-03-2015, 10:57 AM   #7
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I generally maintain my speed at 60 - 65 mph. I'm towing a 12k 38 ft. fiver with an 07 Dodge diesel (5.9l Cummins). Certainly I have the power to go faster, but there is a 1-3 mpg loss in fuel efficiency. Additionally I assume that braking is tougher and will contribute to faster wear on the brake pads.

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Old 12-03-2015, 11:29 AM   #8
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I stay at about 65 mph. The little one ton can certainly pull it much faster but, why? I'm with some of you others. Got time, save some fuel and don't tear anything up before it's time. Besides, going up most mountains, I can still pass 18 wheelers. I just get out of the way going down the other side!
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Old 12-03-2015, 12:14 PM   #9
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We have found that you need to follow each state's seed limit laws. For instance in California, the speed limit is 65mph, except for semi-trucks and any vehicle that is towing. That speed limit is 55mph. (They have very hefty speed fines!) You will find that most states have laws for towing, and or, the size of vehicle. If you are towing a large 5th wheel you do have to realize the safety of towing at a safe speed. I usually tow bewteen 60 and 62, except where the speed limit is lower (again California). I am not out to win the race, but aim to be safe and get to our destinations. And, if you have ever had a tow-master tire blow, you will be very glad to be going a little slower.
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Old 12-03-2015, 12:18 PM   #10
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Cruise speed

I tow at 60 to 65. I'm in no hurry and my truck gets a lot better fuel economy at that speed.

Most trailer tires run cooler at slower speeds. Not to start a big "heated" discussion but I tow a lot and see lots of big trailers on the side of the road with blown tires.

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