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Old 08-05-2009, 07:28 PM   #1
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uneven tire wear on Tandem Car Trailer

I have a brand new Trailer that I haul behind my Class A National Seabreeze 8321 LX. It is made by Brewer Impliments of Tifton, Ga in May 2009.

It is rated for 3500 lbs per axle. I am carrying a 2006 Mercedes C230 which weighs about 3500 pounds. I estimate the loaded Trailer weight is 5300 pounds and the axel weight when attached to the RV is 4,960.

I have Driven 5500 miles and just noticed that both rear tires are bald on the inside for about 2 inches.

Since these are Trail America Bias tires (ST 205/75 D15) there are no steel belts and am concerned that I will have failure at any minute.

Can any one help me determine the cause or where I can find the cause of the failure?

I expect I will have to stop at a tire store and replace these with a couple of Steel belted tires but I suspect the wear will continue unless I learn the cause. I am a Rv newbie so have no experience with this



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2004 National Seabreeze 8321LX
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Old 08-06-2009, 09:42 PM   #2
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I would have the camber checked on the axles. Assuming you are towing the trailer nearly level, sounds like a bent axle (new ones have come bent). If most of the weight is on the rear axle it may have overloaded it enough to require straightening. Some big truck/trailer repair shops have the machinery to straighten axles.

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Old 08-28-2009, 01:35 PM   #3
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Sounds to me like uneven axle weight--is the trailer level or up in front? If up in front, that could be the cause and should also cause some sway. If it is level, as Ray said, the camber is off on the rear axle. One way to tell this is to load the trailer with the MB, and back off a ways to look at the rear axle from the back--look for tires leaning inward at the top. Also, you can use a carpenters level to check for off-vertical differences between the front and rear axles.
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Old 08-29-2009, 08:51 AM   #4
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Couple of things. Axle alignment or overloading one axle causing the problem. Is this trailer sitting level when loaded and hitched? I think before I did anything i would load it up and get to a set of scales and try and get each axle weighed independently to try and determine if it is something you are doing. If everything looks good then proceed to a truck alignment shop and have them check the alignment specs and fix if necessary. Again with the trailer fully loaded.
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