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Old 02-07-2014, 10:01 AM   #1
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upgraded axle

Has anyone had a factory upgrade from 6000 to 7000 LB axle? I think our 320 (with options) will be within 300 - 350 lbs of the dry weight of a 370 (which comes with 7K axles). I was wondering what the factory charged for the up grade. Thanks
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Old 02-07-2014, 10:56 AM   #2
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Quote:
Originally Posted by goukcats View Post
Has anyone had a factory upgrade from 6000 to 7000 LB axle? I think our 320 (with options) will be within 300 - 350 lbs of the dry weight of a 370 (which comes with 7K axles). I was wondering what the factory charged for the up grade. Thanks
I don't think you would ever need 7k axles on a 320. Even with 700lbs of options, you still have 2600lbs of cargo left. That's like adding a Mini Cooper to your trailer. The 370 is 5' longer and a 1000 lbs more on dry weight, and with options, the 370 would be pushing the limits of cargo with 6k axles, where a 320 is not.
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Old 02-07-2014, 01:37 PM   #3
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I don't believe the factory will do the upgrade anyway.
You'd have to do it on your own.

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Old 02-08-2014, 06:44 AM   #4
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Had a LONG talk with the Lippert engineers during the 2013 Goshen rally about increasing the GVWR of the camper by upgrading the axles.

The upshot was that they WOULD do the upgrade, BUT DID NOT RECOMMEND IT because it would not increase the GVWR.

WORSE YET, it would defeat the purpose of doing it because the heavier axles would reduce my available payload; not increase it.

The reason they stated as that when the GVWR was established, the number was based on the LOWEST RATED component (in my case the frame) and all other components were designed (sized) around that maximum weight.

They said that even IF it was the axles, upgrading them would STILL not increase the GVWR, because they would have no way of knowing where the NEXT domino was without a complete engineering study.

It seems that even the WALLS are built differently in heavier GVWR vehicles (more studs) to account for the additional flexing that would occur with more weight. They said my first warning of a problem could be wall cracks at the corners of the slide-out cut outs.
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Old 02-08-2014, 08:00 AM   #5
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My dealer informed me that the factory would not change the axles. I appreciate the responses. Thanks
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Old 02-12-2014, 07:03 PM   #6
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It seems the dealer answered my question before verifying with the factory. The factory rep said they did do axle upgrades at a customers request & it was mostly in situations such as ours. The 370FL comes with 7K axles & it's dry weight is 1000 lbs more than the 320RS. According to that particular factory rep, the frame & everything else is the same so there are no negative implications. Our options added 700 plus lbs so I feel better getting the heavier rated axles. This is not a listed option, you have to ask for it. FYI, my dealer asked $400.00 for the upgrade.
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Old 02-12-2014, 08:38 PM   #7
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Do you really need 4600lbs of cargo carrying capacity? Can't imagine what I I could possibly put in a trailer that would add up to that much.
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Old 02-12-2014, 10:28 PM   #8
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We will probably not exceed 2000 lbs cargo. I didn't want to be within a 300 lb threshold of what the engineers thought should be a heavier axle (if I had an alternative). That was my concern & I know it is probably overkill.
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Old 02-18-2014, 04:46 AM   #9
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That margin is already built into the axles and frame by the design engineers. If you are under, you are well within the capabilities of the rig.
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Old 02-18-2014, 03:53 PM   #10
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overkill never hurt nobody. sometimes even the factory does it. My Vcross has 5200 lb axles and 16 in LR E wheels and tires in a 30ft 7900lb dry weight 5er. dripping wet I am still at least a ton or more under the axles.

Go ahead if it makes you feel safer. Worse things have been done.
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