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Old 12-04-2007, 07:21 AM   #15
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i know of a certain contributor here who's a/s tires looked exactly like that... it was never conclusively decided whether the tire wear was an indication of a serious alignment issue that caused the coach to lurch into an unrecoverable sway and roll several times.
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Old 12-04-2007, 12:12 PM   #16
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I guess a trip to the AS Doctor is in order.
Thanks everyone...will let you know the diagnosis. Major headache as we are full-timing while building new digs.
Cheers, Jeff
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Old 12-04-2007, 10:05 PM   #17
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From your original post, it does not appear to me that the street side tire is wearing evenly either. If this is a double axle set up I would say you may be doing a lot of turning. And/or it may be a toe set issue.

If you feel inclined you can check toe easily with a string. And a 2007 unit should have some warranty coverage such that a dealer can tackle the issue.

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Old 12-05-2007, 09:14 AM   #18
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There are only straight roads in AZ. Yeah, both sides are funky, but the the curb side is definately worse. I'll check the toe when I get a chance this weekend.

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Old 12-08-2007, 08:40 AM   #19
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Lets us know your findings if you do check toe.

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Old 12-08-2007, 09:08 AM   #20
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That's just Goodyear Marathons! They do that!
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Old 12-08-2007, 09:52 AM   #21
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Outside wear could be indictive of low air pressure.
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Old 12-08-2007, 10:05 AM   #22
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My Marathons looked very similar. Changed tire brands and with nearly 50,000 miles on the new tires, they show NO uneven wear patterns. It's just Marathons!
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Old 12-08-2007, 10:16 AM   #23
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Tire Wear

I had a very similar problem with my 78 31' Excella. The tires on the road side were wearing and cupping. The only solution I know that works is to take it to the factory and have them align the wheels. It is an interesting process where they hook a come-a-long to the axle and bend it, bringing it into alignment.

Once I had this done, I have had no further problems with tire wear. You may be able to find a dealer that can do the alignment, but for sure the factory will do it and do it right.

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Old 12-09-2007, 10:56 AM   #24
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It looks like I have excessive toe-in on the front curbside wheel, the one that shows the most wear. I've always checked pressures before going on the road, so I ruled that out. Still need to talk to AS dealer in Tucson before jumping the gun here. A trip to Ohio is not in the cards for a thousand reasons($$$$$ and weather). When new tires are necessary, I will definately look at other brands. I, along with many others I'm sure, am getting tired of all the Chinese crap foisted on us by greedy manufacturers. At least there's no lead in my tires( I'll leave it at that!! )
Cheers, Jeff
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Old 12-09-2007, 11:37 AM   #25
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Before you go to the dealer for work see if you can find a TRUCK AXEL shop. These axles require rebending to aline them. That takes equipement that Jackson doesn't even have as I can attest to from first hand experinece. Picture show my trailer in a shop in Pa. for an alinement after the installation of new axles.
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Old 12-11-2007, 10:23 PM   #26
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Quote:
Originally Posted by startrekker2001
I had a very similar problem with my 78 31' Excella. The tires on the road side were wearing and cupping.
Vic

Cupping can be from out of balance running gear or weak shocks. The tire/wheel assy is bouncing as it travels causing uneven wear. The shock dampens the bouncing. The balance fixes the cause. This is not a tire design issue unless the tire (or wheel/hub assy) are grossly out of balance.

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Old 12-11-2007, 10:26 PM   #27
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This site may help.

HDT Tire Wear Chart pictures from trucks photos on webshots

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Old 12-11-2007, 10:46 PM   #28
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Ok.........It's pretty easy to figure out what is wrong. Take a straight edge and place it across both tires on the same side, just below or above the center cap. This will tell you if you have a toe-in/out problem. Look at where the straight edge intersects each tire. There is a possibility the tires are coming apart and will read unevenly. This can be checked by jacking up the trailer and hand spinning the tire checking the sidewall for unevenness by using a stationary fixed point. I used a plastic pail with a stick laying across it. I set the stick about 1/16" away from the tire, held it in position, then spun the tire. If the tire was out of square, it would have shown up. The tire sidewall should always be the same distance from a fixed point when the tire is spinned by hand. With the info from above continue........ find the exact center point of the back of the ball opening at the trailer tongue, then measure very carefully from the exact center point of the back of the ball opening to the closest point of each wheel (usually the inside of the wheel rim. Measure very carefully. If the measurements are within 1/4", the alignment of the axles is probably in the acceptable tolerance range. Mine were the exact same dimension! And..... putting a straight edge across both tires on the same sideconfirmed there was no tow in/out problems. Proceed.
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