Good Sam Club Open Roads Forum: Travel Trailers: Leveling Issues
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Grit dog

Black Diamond, WA

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Posted: 05/09/22 10:16am Link  |  Quote  |  Print  |  Notify Moderator

Level/flat/parallel seem to be sources of confusion in RVing. The semantics of which will just get lost on some, so no point arguing aboot what the slope of your driveway is, how it drains, or how it affects precise measurements between the 2 surfaces.
Whether all 4 corners are perfectly “level” (theoretical “level towing” which does not need to be precise to the 1/2” over 30’, but more an order of magnitude thing) is irrelevant to setting it up for towing. You can get your tongue height based on how it’s sitting now. Again, approximate, not important to the magnitude of minor fractions of an inch.
On to the trailer. Since the bumper mimics your measurements, assuming a relatively “flat” planar pavement there are a few possibilities, taking out the “how it sits on the driveway” part.
First, TTs are generally not super rigid frames. Most frames are barely sufficient for the load rating and therefore will experience a good deal of flex.
1. Loading, something causing a little sag on the starboard aft corner.
2. Difference in tire pressure, minor suspension differences etc.
3. The trailer/frame is actually slightly twisted.
4. Any combination of the above plus in inconsistency in driveway.

Overall I would not be alarmed. Trailer is brand new. Document it with the dealer if you’re convinced it could be a problem and then load it up and beat it down the highway. And see if it gets better, worse or the same.


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BurbMan

Indianapolis, IN

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Posted: 05/09/22 06:06pm Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:

Without getting complicated, trying to establish level to a high tolerance is going to be difficult. Unless there are signs of something obviously bent, damaged, misaligned, etc..., I'd probably call 1/2 inch good enough given the limitations of your means of measurement.


That's where I was heading with this...in the absence of an identifiable problem I would say there isn't one.

valhalla360

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Posted: 05/10/22 07:30am Link  |  Quote  |  Print  |  Notify Moderator

BurbMan wrote:

The driveway isn't level per se, but it's flat, meaning that if he got the same F/R frame to ground measurement on the left side it should be the same on the right too if the TT frame is flat.


Have you ever set forms for a concrete driveway? Sight down an old 2x6 that has been used multiple times and it's not unusual to see a 1/2inch of bowing/twisting.

Unless it's something like a machine shop where the floor had to be precision leveled for a special piece of machinery, I wouldn't trust a concrete floor to be that precise.

To really get it accurate, you would need to do something like:
- Place thin shims where the tires will sit and using a laser level, make sure they are perfectly level under all 4 tires. Probably need them level to less than 1/16th inch if you want to check for better than 1/2 inch accuracy.
- Verify the tires are identical and aired up to the same level. Low air pressure could throw off the measurement.
- Use a laser level to set a baseline and measure from the frame to the baseline on all 4 corners.

And even then, little things could throw off. Is there camber to the main beams?


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Sjm9911

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Posted: 05/10/22 03:45pm Link  |  Quote  |  Print  |  Notify Moderator

I am curious as to why your measuring and leveling the camper? You measure the tv for the wdh? After its hooked up you see if its level? Thats one.
Two is are the tires all the same and inflated to the same psi? I wouldn't worry about an inch, especially since, it could be anything. But is just probably the small slope of the driveway as stated.


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Webber229

Torbert LA

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Posted: 05/11/22 03:09am Link  |  Quote  |  Print  |  Notify Moderator

Sjm9911 wrote:

I am curious as to why your measuring and leveling the camper? You measure the tv for the wdh? After its hooked up you see if its level? Thats one.
Two is are the tires all the same and inflated to the same psi? I wouldn't worry about an inch, especially since, it could be anything. But is just probably the small slope of the driveway as stated.


In the Manuel for the WDH it says you must have the TT level to get the correct hitch hight! Thanks for the reply.

Sjm9911

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Posted: 05/11/22 06:26am Link  |  Quote  |  Print  |  Notify Moderator

Ah , got you now. I just pulled to a level spot and did the install. If you level the camper even on a small slope, you move it on a fulcrum, rasing or lowering the front, so measurements will be different depending on the slope you parked it on. Measure it on totally level ground and I bet its probably on the money.

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