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Old 05-04-2016, 08:35 AM   #21
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100 to 110 km/h (Canadian, eh!)

or about 62 to 68 mph. Depending on the terrain and the wind.


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Old 05-04-2016, 08:59 AM   #22
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Originally Posted by oz97tj View Post
My tires are rated at 65 so I usually keep it under that. However my Ram lugs at that speed so I usually lock out 6th and that keeps me around 1600 ram at around 64 mph. Going faster sees less fueled economy and unless running thousands of miles doesn't really save bit just a few minutes. Also, it's easier to stay in the right lane than it is to be passing others trying to change lanes all the time.
You have the Cummins with 68RFE tranny and 3.42s? That's what I have and my truck runs better at 67 than 65 in 6th and could be it gets the RPMs a little higher.

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Old 05-04-2016, 09:34 AM   #23
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Hardly ever more than 60, and often slower depending on the road conditions. And I always drop down to the recommended caution speed that's posted ahead of curves and other such things.
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2011 Jay Flight 26BH
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Old 05-04-2016, 09:54 AM   #24
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I try to stay right around 65mph because 85mph was starting to freak out everyone around me
2017 F250 Lariat Super Duty Crew Cab, 4x4, 6.7L Power Stroke
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Old 05-04-2016, 10:54 AM   #25
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Originally Posted by Seann45 View Post
IF your tires are ST they are only speed rated for 65 mph max.. Don't blame the tires if you have a blow out going faster..
I agree and have evidence that going over 65 mph with ST tires are a recipe for disaster. I just sold my Eclipse 19FK TH which a couple years ago I installed brand new load range E ST tires and blew them up cold to 80 psi thinking I could now put the hammer down. Well, on I-15 in NV heading south in about 100+ degree weather at 75 mph, I blew two tires within maybe 50 miles or so between with one destroying the street side fender skirt. Needless to say, all (4) tires ended up destroyed with (2) tires suffering tread separation in that one trip. I later discovered that 65 mph is the max. speed with any ST tires even though I upgraded to load range E. The following year in late 2015, I actually drove to WV from SoCal and back and I kept the speed at or under 65 mph and did not suffer a tire problem whatsoever. Granted the trip started out in September which was much cooler than the 100+ degree days from the disaster trip the year before but I think having all four tires being destroyed is true fact evidence that speed kills due to the friction and heat generation.

With all that said, I will be upgrading all (5) tires on my soon to be new TH specified in my signature below. I will be first looking into the fitment of 235-75/R16 G rated Sailuns and if fitment is a problem, I will be going with the 17.5" wheels and Sailun H rated upgrade.

I drove an 18 wheeler in all 48 and Canada for over 10 years after my military stint in the mid seventies so, I have good experience with heavy trailer hauling however, I have learned a good lesson and will now keep my speed down to 65 mph or below at all times even with the upgraded wheels and or tires.
2017 Octane T32C TH (on order as of 04/08/2016)
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Old 05-04-2016, 02:04 PM   #26
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60-62 is mx for me. Just a weekender, and that is fast enough for me. I ride the right hand lane so if you want to pass, feel free.
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Old 05-04-2016, 02:44 PM   #27
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Depending on the conditions (traffic, roads, weather) I tend to stay around 55-65 mph. I refuse to be in a hurry because I carry precious cargo along (DW & two young children).
'13 Ford F 150, FX4 Off Road, Ecoboost
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Old 05-04-2016, 02:45 PM   #28
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Around 60-62. When I first started towing the TT I was under the illusion that if I towed at 55 I would be the slow poke and everyone would go right by me, hence I would rarely have to pass anyone. Nice and relaxing. Boy did I get fooled. There are so many driving 45- 55 at least on these non interstate roads that I frequent that I was still constantly coming up on slow traffic to pass. So my theory did not work.
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Old 05-04-2016, 02:53 PM   #29
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It something that you would think would be mentioned when you buy a new trailer.
Most comments here have been regarding fuel economy or personal comfort, with very little mention of the actual speed rating of your tires.
Even when I have mentioned to friends that you cant tow at 85 mph with their tires they think I am stupid.
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Old 05-04-2016, 02:57 PM   #30
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Between having 3 or 4 year old tires on the trailer, trying to get good mileage, and the extremely dangerous highway we travel on for most of our trips I usually keep the cruise control at 55. Plus that is the speed limit when towing on most California highways, a fact that way too many people ignore, which is even scarier with some of the unsafe towing setups. I am not going to risk damage to my trailer, truck, or most importantly endanger my family or someone else's because I want to stress myself out going too fast just to get to the campsite a few minutes earlier. If you get stuck behind me I will pull over if I can, and if not I will usually speed up to 60 temporarily until it goes back to 4 lanes again.

Stay safe!

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1999 F350, XLT, 4x4, 6.8L V10, AT, CC, LB
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