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Old 05-03-2012, 02:56 PM   #1
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Question Jayco Trailer came from factory with underrated wheels?

Howdy,

I recently purchased a 2006 Jay Series 1206 camping trailer from the original owner. They family hadn't used it in a few years and the factory tires are in need of replacing due to the usual aging and lack of use (sidewall cracking). The GVWR of the 1206 is 3450 lb and the vehicle was equiped with the correct size and load range tires (185 80 13 load range D) but I have noticed that the rims are stamped with a max load of 1660 lb which matches what Dexstar has on their website as the highest their 13" wheels are rated for http://www.dexstarwheel.com/products.html#changer So technically speaking, my trailer came with wheels that are designed for less load than Jayco approved the trailer for, as far as I can tell. Has anyone else noticed anything like this? Seems like there must be an explanation besides "Jayco didn't do their homework".

-David
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Old 05-03-2012, 03:09 PM   #2
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Your situation is not unique, in fact it is pretty much the norm. They assume a certain amount of weight will be on the tongue, 10 to 15%, which in turn will be on your vehicle and not the wheels/tires/axles. Example, my TT has a GVWR of 7500 lbs. but the axles are only rated 7,000 lbs. My tongue weight is approx 900-1,000 lbs. I for one am a believer that the tires/wheels/axles SHOULD be capable of carrying the entire GVWR, but that just is not the case on many trailers today.
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Old 05-03-2012, 04:11 PM   #3
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I agree with others, that is quite common since the factory calculations assume the Pin / Hitch weight portion of the total weight is not on the tires.

Our previous Jayco Eagle 5th 251RLS Wheel was the exception.

It was rated at 9,800 lbs GVW, had 5,000 lb axles under it and tires rated at 2,650 lbs per tire.

Our current Pinnacle has a GVW of 14,950 lbs, it has 7,000 lb axles but the factory installed tires that are only rated at 3,420 lbs so the axle GVW on the label was reduced to 6,800 lbs because of the tires.
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Old 05-03-2012, 04:58 PM   #4
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Thank you for the insight, gentlemen!

By the same logic why not use LRC tires instead of LRD's? I guess I'm just not used to operating with so little margin. I'm an "I love margin" guy which might have just a teeny bit to do with being a safety engineer. Might also have a bit to do with the work I'm doing on the trailer right now:

The surge brake actuator was totally corroded inside and what fluid had been left in the reservoir when I bought it was gone 100 miles later after I got it home, having leaked out through the driver side drum actuator so Mr. Margin here orders electric brakes to retrofit rather than worry about sleeping soundly at night with rusty surge brakes. Same thing with the tires, I want to KNOW what I have on my rig is safe rather than try and wring another year or two out of the tires. Same thing with the hitch. I CAN tow with the full tongue weight on the hitch but decided that a WDH was the way to go, and so on.

You guys think my array of 4 group 29 deep-cycle batteries will be enough to dry-camp overnight in that 1206? :hihi:
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Old 05-03-2012, 06:53 PM   #5
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Originally Posted by MojaveDesertDave View Post



You guys think my array of 4 group 29 deep-cycle batteries will be enough to dry-camp overnight in that 1206? :hihi:



I would think it would be plenty. The biggest drain on the batteries is the furnace fan, and even that would not kill 4 in one night. But for expert opinions you may want to post a new thread asking that question.
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Old 05-04-2012, 12:28 PM   #6
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Originally Posted by MojaveDesertDave View Post
Thank you for the insight, gentlemen!
By the same logic why not use LRC tires instead of LRD's? I guess I'm just not used to operating with so little margin. I'm an "I love margin" guy which might have just a teeny bit to do with being a safety engineer. Might also have a bit to do with the work I'm doing on the trailer right now:
Mine came with LRC tires and, yes, their combined weight rating is less than the max weight of the trailer. I figure I'll use them for a year and then upgrade.
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Old 05-04-2012, 04:06 PM   #7
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Don't forget to subtract the tongue wt from the max weight your rig weighs. The tongue of your tow vehicle bears some of that max weight.
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Old 05-04-2012, 09:08 PM   #8
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Don't forget to subtract the tongue wt from the max weight your rig weighs. The tongue of your tow vehicle bears some of that max weight.
Unless you use a WDH. Then half of the tongue weight does go back to the TT axles.
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Old 05-04-2012, 09:25 PM   #9
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Unless you use a WDH. Then half of the tongue weight does go back to the TT axles.
Not exactly.

A weigh distributing hitch transfers some of the tongue weight to the trailer axles and to the steer wheels of the tow vehicle.

1/2 of the weight transferred to the trailer axles is extremely optimistic, and not realistic.
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Old 05-04-2012, 09:43 PM   #10
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Not exactly.

A weigh distributing hitch transfers some of the tongue weight to the trailer axles and to the steer wheels of the tow vehicle.

1/2 of the weight transferred to the trailer axles is extremely optimistic, and not realistic.
That's correct. I did an edit to say some going to TT axle some to rear tv axle and some to front tv axle.

My only point was you cannot subtract all of the tongue weight from total weight on TT axle.
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