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Old 04-05-2016, 11:52 AM   #1
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Recomended TT Safe Highway Speeds

What would be a good rule of thumb highway speed for a TT? The reason that I am asking is that my TT gets a bit dicey when getting close to 65 MPH. Checked my Weight Distribution Hitch adjustments to make sure they are correct; it cannot get any better, pretty much text book perfect.

Read countlless threads and seems to be an aero characteristic from dragging a box down the road tied to the rear bumper.

Can we say that 60 MPH is the top speed before encountering aerodynamic instability?
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Old 04-05-2016, 11:59 AM   #2
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I can haul my 19' TT safely at 65-70. I can hit 75 maybe going downhill, but I always get back to 65-67.

Many people will tell you they never tow in excess of 65, but many big 5th wheelers and TT people pass me doing 75+ on a regular basis.

I believe that if you have any instability at all from trailer sway, due to TV or hitch limitations then slow down as that is the biggest cause for concern. Your other concern might be braking ability. Do a couple of panic stops where there is no traffic and see how your TV handles an emergency braking condition.

I have zero braking or sway problems from either passing trucks or going fast (75)... but sometimes a good cross-wind will catch the TT and briefly make it sway, which will cause me to slow down.
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Old 04-05-2016, 12:01 PM   #3
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We will not exceed 60-65. Works for us.
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Old 04-05-2016, 12:34 PM   #4
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55. Remember those chinzy Chinese ST tires under your trailer are only rated to 65MPH.
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Old 04-05-2016, 12:36 PM   #5
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I have a 36 ft tt and pull 60/65 depending on condition of road. Some roads make me drive at 50 mph and its white knuckle ride. 😁 a few are so good your doing 70+ with out knowing it.


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Old 04-05-2016, 12:40 PM   #6
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My rule of thumb is that I tow at whatever speed feels comfortable to me on that particular day up to the speed limit.

A lot of things influence how an RV (or any trailer for that matter) tows. Side wind, road conditions, weather conditions, up to and including your state of mind and body at the time.

If something feels amiss, just back off and take your time. No matter what speed that is.
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Old 04-05-2016, 12:46 PM   #7
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Quote:
Originally Posted by Bama Rambler View Post
My rule of thumb is that I tow at whatever speed feels comfortable to me on that particular day up to the speed limit.

A lot of things influence how an RV (or any trailer for that matter) tows. Side wind, road conditions, weather conditions, up to and including your state of mind and body at the time.

If something feels amiss, just back off and take your time. No matter what speed that is.
^^^This is how I determine my towing speed.
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Old 04-05-2016, 01:10 PM   #8
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What about some called Air Tabs? Claimed to improve mileage and stability. Is it Snake Oil? The stability is more important to me than fuel economy.
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Old 04-05-2016, 04:06 PM   #9
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I've seen the 'Air Tabs' and am intrigued by them. The fuel savings is only about 1% but they claim to help the turbulence issue behind the box.

If they weren't so expensive I'd try a set.

I also see a lot of semi's with angled rear panels that I assume are for fuel savings.
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Old 04-05-2016, 04:17 PM   #10
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A lot depends on what you're towing. My first RV was a 2010, Casita Spirit Deluxe Travel Trailer. The Casita was a wonderful way to get started RVing. Because it's basically a fiberglass "egg", it towed VERY easily behind my 2004, Toyota Sienna minivan (which was equipped with the factory tow package), even at 12,000+ feet above sea level! As mentioned, trailer / RV tires are a limiting factor. KNOW the speed rating of all your tires. Proper tire inflation is also critical. Have you considered an air dam / deflector for your tow vehicle? You might get a better ride / tow if the air was "reshaped / redirected".
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