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Old 08-30-2005, 06:33 PM   #1
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Thumbs up Right rear tire scrubbing

Is there any logical explanation for the right rear tire to be evenly scrubbing its' outside tread? This took place on an extended round trip to Florida from Maine (---about 4,000 miles via the long way.) I religiously maintain the air pressure and the weight distribution - but I'm wondering if road crown and/or sway could be partly to blame as opposed to a mis-aligned wheel? The remaining three tires are wearing evenly. As for the "sway," it's really not too noticeable with respect to moving the TV around. Coming up on 6 years old, I'll probably replace the tires next summer - but I don't want to prematurely wear out the right rear again.
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Old 08-30-2005, 07:07 PM   #2
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Originally Posted by Cracker
Is there any logical explanation for the right rear tire to be evenly scrubbing its' outside tread? This took place on an extended round trip to Florida from Maine (---about 4,000 miles via the long way.) I religiously maintain the air pressure and the weight distribution - but I'm wondering if road crown and/or sway could be partly to blame as opposed to a mis-aligned wheel? The remaining three tires are wearing evenly. As for the "sway," it's really not too noticeable with respect to moving the TV around. Coming up on 6 years old, I'll probably replace the tires next summer - but I don't want to prematurely wear out the right rear again.
Sounds like you have an alignment issue, if it was air pressure, it would be worn on both outer and inner edges of the tire. If it was weight distribution, it would be on both rear tires, if it was road crown, it would be both right tires. If it was sway, the tread would be worn evenly off all tires. If it was a bearing failure, it would likely show itself as cupping on the inside tread, and if it was an axle failure, it would show as flat spots worn diagonally across the outer half of the tire, and most likely on both rear tires.
If I were to guess, I would say you have excess positive camber on that wheel, coupled with positive toe. In English, that means the tire is leaning out slightly, and turned slightly in at the front, like it is trying to make a left turn.
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Old 08-31-2005, 09:42 AM   #3
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Just for kicks and giggles ...............

Measure the distance between the tires on the right side and then the tires on the left side. If there is much difference, (like the right side is closer than the left) the axles are not square or lined up to each other.


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Old 09-01-2005, 08:39 PM   #4
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Alignment

Quote:
Originally Posted by Action
Just for kicks and giggles ...............

Measure the distance between the tires on the right side and then the tires on the left side. If there is much difference, (like the right side is closer than the left) the axles are not square or lined up to each other.


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Is the distance between the axles adjustable? I always thought that they were welded to the supporting member when they were paired up.
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Old 09-01-2005, 09:12 PM   #5
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You're right, they aren't adjustable. I think what Action is suggesting is a simple test to see if one of the wheels has been knocked out of alignment (a possible result of a bent axle). Measure between the wheels on the same side.

I just saw one like that a week ago. The axles can be bent, causing the wheel to be permanently out of alignment. The result can be uneven wear, scalloping on the tread, etc.
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Old 09-01-2005, 09:54 PM   #6
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tire wear

Sounds like you have an alignment problem. I had the same problem on two previous AS. A trip through the alignment shop fixed both trailers. One was a two axle and the other was a three axle. You might try rotation to prolong tire life for a short time but a tire that is wearing fast is also warmer than the others so don't let it go too long. I paid about $140.oo for the two axle and $280 for the three axle. The three axle cost more becauce they had to drop the rear axle to bend it back into alignment. The result was even tire wear. AS axles are easy to knock out of line.
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Old 09-02-2005, 08:53 AM   #7
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Cool Axel problem,

Hi All,On the way to Alaska this summer I wore out two tires on the AS.Finally I had enought. I was blaming the electric brakes of locking up. In a little town of Smither BC Canada they discovered a bend axel on the pasenger side front tire. A machine shop in the same town took out the axel and bend it back in place. The axels on my Sovereign is bolted on. This machine shop had a huge press where they bend in back in to alighment. Had to replace all tires since no one in town had any regular ply tire so I put on radials and gained about 2 miles per gallon.
The trailer run great now. It was a pleasure to find real mechanics and not part replacers as we find in the big city. If I was home in Tucson it woul have cost me at least 1550 for new axel and about 450 for tires. I got away in Canada for less than 800 Canadian dollars.
Regard Russell
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Old 09-02-2005, 12:04 PM   #8
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Cracker,

The distance is not adjustable by a conventional means.

What I was suggesting as a very quick and dirty method to determine if you have a problem with an axle or wheel. Depending on what you find we could direct you to pin point the problem. Doing this measurement would take about 15 minutes, costs nothing, requires no special tools, and is a fairly accurate diagnostic proceedure.

That's what I always like ....... quick and cheap!

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Old 09-02-2005, 12:06 PM   #9
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Also the above doesn't really get you anything other than knowledge.

I have heard knowledge is power.

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Old 09-03-2005, 12:09 PM   #10
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Alignment

Is aligning the axles something any alignment shop could do - or do they have to be "trailer" specialists? I will measure the distance between the wheel centers later today.
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Old 09-03-2005, 09:16 PM   #11
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You know Cracker, that's not a easy question to answer.

You are looking for some one that has experience in this type of axle. It has rubber on the inside, so someone with a torch or someone that wants to apply heat should be avoided most definately. I am not a fan of bending axles, and a person that has experience or skill can do this proceedure. I have seen it work and I have seen cold bending be an big issue later.

So no direction other than someone or company that has don't it before. Get local referrals. And first you want to know you have a bent axle 1st. It could be the way one of the axles are mounted. Or a wheel rim. Or ....

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Old 09-03-2005, 10:37 PM   #12
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Quote:
Originally Posted by Cracker
Is aligning the axles something any alignment shop could do - or do they have to be "trailer" specialists? I will measure the distance between the wheel centers later today.
I could give you a readout, with all angles on it, but I would not want to go bending anything. I used to bend the old Ford twin I-Beam axles with my frame bender, but that was a long time ago, in a galaxy far, far away...I have never been trained to bend torsion axles, and I would not want to take the trailer to any automotive alagnment shop. At the very least, they could make matters worse. A worst-case scenario, well, there could be no limit to the downside of this one. Take it to a trailer alignment specialist, or at least one with experience in aligning torsion axles.
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Old 09-05-2005, 07:44 PM   #13
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Alignment

It's beginning to sound like a trip to the "Mothership" may be in order! I also have a defunct A/C and, besides, I need to get away for a couple of weeks. This retired life has its benefits! There should be just enough time to do Michigan before everything gets shut down. If I go, I think I'll install the new spare for the trip.
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Old 09-05-2005, 08:06 PM   #14
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Quote:
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It's beginning to sound like a trip to the "Mothership" may be in order! I also have a defunct A/C and, besides, I need to get away for a couple of weeks. This retired life has its benefits! There should be just enough time to do Michigan before everything gets shut down. If I go, I think I'll install the new spare for the trip.
Let us know what the final outcome is, so we will have more info for the next person this happens to.
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