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Old 06-28-2018, 03:06 PM   #1
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Default How Fast Can It Go?

Is there a speed limit where the modern Sprinter chassis becomes unstable driving a straight line due to their relatively tall height?

A 144ft wheelbase Sprinter appears to be not much bigger than a large SUV but does the roof height and the AC on the roof dramatically impact the handling?

Is 75 MPH pushing the limits of the chassis / brakes?

RV speed limit is 80 MPH in Nevada.
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Old 06-28-2018, 03:12 PM   #2
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Sprinters have speed governors at 82MPH. Our rig feels perfectly stable at that speed, barring severe cross-winds.
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Old 06-28-2018, 03:45 PM   #3
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Old 07-07-2018, 03:16 PM   #4
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Default It all depends on the situation

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Originally Posted by ClassB4Me View Post
Is there a speed limit where the modern Sprinter chassis becomes unstable driving a straight line due to their relatively tall height?

A 144ft wheelbase Sprinter appears to be not much bigger than a large SUV but does the roof height and the AC on the roof dramatically impact the handling?

Is 75 MPH pushing the limits of the chassis / brakes?

RV speed limit is 80 MPH in Nevada.
For safety... and fuel economy...I would keep it between 60-65... although I did get my van up once to 80.... speed limit was actually 80 in Utah..

Look, the vehicle is almost 10 feet tall... and it's a cruiser.....yes. I've gone 70 -75 for a few hours ...its certainly not straining the engine.... but....are you that much in a hurry??

I like to have a little more control at the lower speed.. just me..
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Old 07-08-2018, 04:48 PM   #5
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I have high roof standard length 4x4. I don't do it often, but have driven at 80 on western highways. No problem at all, though I usually drop down to 70-75 simply because its more relaxing to cruise in the right lane. Also, anything over 55 and mpg noticeably decreases.
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Old 07-08-2018, 04:50 PM   #6
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We have a 22'9" Roadtrek Sprinter. I have caught myself in the 85 MPH range passing and had no issues, but you can feel that it would be very easy to lose control.
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Old 07-08-2018, 05:00 PM   #7
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Default Have you tried cruising at 55 MPH?

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I have high roof standard length 4x4. I don't do it often, but have driven at 80 on western highways. No problem at all, though I usually drop down to 70-75 simply because its more relaxing to cruise in the right lane. Also, anything over 55 and mpg noticeably decreases.
55 MPH is a very relaxing speed.... what's your mileage at this speed.?

I imagine that the people reporting more than 20 MPG are cruising at this speed...

I AGREE with you.... when I go 70 to 75...MPG is around 18 or 17 plus....

Going 80 MPH is unnecessary and risky.... citations, and possibly lost control... worse... accident...tire blowout...the list goes on and on.....

It's an RV...the journey is the destination.... remember that... slow down and enjoy the cruise.
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Old 07-08-2018, 06:01 PM   #8
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Default Speed

We have the long chassis, and extra tall roof (7' inside height.) We've hit 80 out west and found 70 to be comfortable. Most of our cruising is between 60 and 70, depending on the road, traffic, wx etc. Slower than that can create traffic issues on Western Interstates, especially where the speed limit is 80.

Have seen very strong cross winds, with tornadoes nearby. There were moments that were a little like wrestling, but never felt like we would lose control. Part of that may be because we put all the heavy stuff low and in the middle.
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Old 07-09-2018, 12:40 PM   #9
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To clarify: I have the 4x4 22 foot model Roadtrek CS. Fully loaded with water in tanks it weighs in at over 5 tons. At 55 mph I get about 18mpg. At 70 I get around 15-16 mpg.
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Old 07-09-2018, 03:03 PM   #10
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Default What's the total exterior height of your vehicle????

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We have the long chassis, and extra tall roof (7' inside height.) We've hit 80 out west and found 70 to be comfortable. Most of our cruising is between 60 and 70, depending on the road, traffic, wx etc. Slower than that can create traffic issues on Western Interstates, especially where the speed limit is 80.

Have seen very strong cross winds, with tornadoes nearby. There were moments that were a little like wrestling, but never felt like we would lose control. Part of that may be because we put all the heavy stuff low and in the middle.
We have a 6 foot 3 inch ceiling inside....I think we have the ", high roof"....
With the air conditioning unit our van is 9 feet 7 inches....

You have an additional 7 inches inside??! What does that translate to on the exterior height?

What's your overall MPG...?? I would expect it to be lower than 18 MPG highway.??
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