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Old 01-17-2012, 08:11 PM   #1
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Question 5th wheel hight

Can anyone tell me what the clearance should be, between the bed rail and the under side of the 5th camper ? so you won't hit the bed rail and cause damage to it or the camper

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Old 01-17-2012, 08:13 PM   #2
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6 inches is considered minimum.

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Old 01-18-2012, 02:10 PM   #3
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Our 5er has about 6 inches and I have no problems
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Old 01-18-2012, 02:15 PM   #4
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6" minimum - another inch or two for insurance if you can get it and still have the 5th wheel towing relatively level.

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Old 01-22-2012, 06:01 AM   #5
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Conventional wisdom is you need 6" clearance for pavement and 8" or more clearance for off road.

I had about 5" clearance, but I also had dings on the top of the bed on both sides. Didn't hurt the trailer, but definitely bent the top of the bed. Caused by turning while crosssing a ditch or dip.

If you stay on the pavement and don't turn while crossing dips or ditches, then 6" should be good. But lots of streets have a drainage dip between the roadway and the service station or shopping center lot, so turning into one of those places is when I needed more than 5".

If you don't have at least 6" while the trailer is level front to rear, then you must either raise the trailer or lower the truck. I had one trailer that had to be raised by "flipping the axles" so it would ride level behind a 4x2 SuperDuty. You don't literally turn the axles over, but you move the spring perches from under the axle to over the axle. That raised the trailer about 3 to 4 inches. And caused us to have to buy one step more so old folks could climb into the 5er.

If your tow vehicle is a 4x4, you may have 4" blocks in the rear suspension. On a SuperDuty, you can change those blocks for 2" blocks and lower the back of the truck about 2". Experience says you cannot have less than 2' blocks in a SuperDuty 4x4 because of driveline alignment, so you can't lower the truck to make it the same height as a 4x2.
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Old 01-22-2012, 06:44 AM   #6
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We have towed a 5er with a minimum of 5" and no problems. I prefer to keep 6" as the minimum.

The 5er needs to be level as well.

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Old 01-22-2012, 08:55 AM   #7
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Lots of possibilities/combinations that can cause clearance problems even with the 6" spacing. My 350 and now my 450 have plenty of clearance EXCEPT when turning/backing sharply, worse if uneven surface--the Morryde pin box has a flange on it that will contact my bed cover rails in this situation that I have to carefully monitor. Raising the trailer to its highest level helped. If I did not have the Retrax cover, I don't think the pin box would hit the bed itself.
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Old 01-22-2012, 07:30 PM   #8
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clearence for 5th wheel

Thanks for the info. I will keep at least 6"

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