Trucks and High Speeds - Dodge Cummins Diesel Forum
2013-2018 General Discussion General Chit Chat About the 2013 model year differences 6.7L 4th generation Cummins - NO ADVERTISING - Sponsored by: StarLite Diesel

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post #1 of 129 (permalink) Old 10-20-2019, 08:56 AM Thread Starter
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Trucks and High Speeds

How does everyone find their trucks hold up at high speeds? Here all the limits are 60, so curious what the 80 85+ drivers can say for long term wear and tear on the truck


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post #2 of 129 (permalink) Old 10-20-2019, 09:15 AM
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I run 80 on the expressway all the time. I donít see any extra wear. I just burn more fuel.


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post #3 of 129 (permalink) Old 10-20-2019, 10:26 AM
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Speed limit for a long stretch of I-10 in west Texas is 80, I have run across there several times in my truck at a little over that, and it's no issue at all.

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post #4 of 129 (permalink) Old 10-20-2019, 10:49 AM
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Most of I-10 through AZ is 75 and trust me, if your going only 75, youíre getting passed like a Yugo on a racetrack!! I regularly run 80-85 (85 is max limit on cruise control. Just FYI) and I have no issues at all.


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post #5 of 129 (permalink) Old 10-20-2019, 11:03 AM
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I have found some spots in TX that are 85. I hate the fast roads when im towing the camper, 75 is max comfortable for me. I love the 60 roads and get better fuel mpg's.
Other than eating more fuel, mine loves to go fast. Just a 2 door 4+4 tradesman. With the 2 door, I have the 28 gallon fuel tank.
( this being unofficial, of coarse) In northern MN its flat and long stretches of road. I don't know what mine did stock, but burying the needle at 120, and giving it more, the truck takes off, and no wobble, just smoooootthhh.. Ill have to check the cruse setting when back this spring, to see if it cant be set over 85.

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post #6 of 129 (permalink) Old 10-20-2019, 11:32 AM
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I run 82-85 all the time. 'cept with camper/boat 75. It loves to go fast. Maybe this is why I don't get 20 MPG.
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post #7 of 129 (permalink) Old 10-20-2019, 11:44 AM
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My 3500 (with 3.73s) would think I was not feeling well if it didn't get to do 80. Maybe a bit more.

Maybe if we start telling people that the brain is an app, they will start using it?

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post #8 of 129 (permalink) Old 10-20-2019, 12:09 PM
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I use the tollway quite often during work commute and run it 90 - 92. smooth as buttah.

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post #9 of 129 (permalink) Old 10-20-2019, 12:15 PM
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If Ram didn't want them to go at least 140, they wouldn't have put 3.42 gears in them.

Maybe if we start telling people that the brain is an app, they will start using it?

'14 1500 V6, '17 3500 C&C, plus a '19 3500 6.4 in the household.
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post #10 of 129 (permalink) Old 10-20-2019, 12:39 PM
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Most wear and tear by far is slower speeds and turning. I would rather get a truck that has 200K miles going 80 on the highway then one with 100K miles of city driving or rural driving on rough roads and sharp turns.

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post #11 of 129 (permalink) Old 10-20-2019, 01:14 PM
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Have done 100MPH in my 3500.

My truck is smooth all the way up and down, but choose your stretch of highway carefully. 8K of truck at that speed does not like anything but flat autobahn type highways. We have lots of smooth roads around me, the run up to Kamloops comes to mind.

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post #12 of 129 (permalink) Old 10-20-2019, 01:17 PM
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Tires would be the obvious fallout from lots of high speed runs.

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