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Old 09-22-2011, 08:06 AM   #15
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Andy,

When I replace my tires where can I get the entire running gear balanced as an assembly? Can any tire store do this, or do we need to go to a specialty shop (or come to you)?
Usually truck tire centers can balance the complete running gear.

In the absence of that, there are wheel balancers that can be added to the running gear, that balance the assembly as soon as the rig gets to about 25 MPH. They last forever, but more importantly, they also keep up with tire wear.

Phoenix, from a post above, gives you an opinion.

Andy
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Old 09-22-2011, 08:55 AM   #16
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Jake, I don't think you mentioned what brand, etc. the replacement tires were. What kind of tires are you experiencing the flat spots on? From your description, it sounds like the belts have slipped; and you are probably only a few miles from tread separation. In any case, I'd take this as a visual warning and replace them. Preferably, with some other tire than GYMs; if that is what you are running. If you haven't already stumbled across this post, checkout this link and search for others on Marathon tire failures, on this site:

http://www.airforums.com/forums/f438...oll-76867.html
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Old 09-22-2011, 10:12 AM   #17
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First time posting a pic. Hope this works. If not sorry for the inconvenience. Photo shows area of heaviest ware. I re-measured . Total area is 12" start to finish. Remainder of the tire shows no abnormal ware.
jake
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Old 09-22-2011, 10:24 AM   #18
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First time posting a pic. Hope this works. If not sorry for the inconvenience. Photo shows area of heaviest ware. I re-measured . Total area is 12" start to finish. Remainder of the tire shows no abnormal ware.
jake
Typical unbalanced issue.

Andy
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Old 09-22-2011, 10:36 AM   #19
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one vote for bad tire.
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Old 09-22-2011, 11:02 AM   #20
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Out of balance and under inflated?
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Old 09-22-2011, 11:46 AM   #21
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Thank you for the picture. Visual works for me.
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Old 09-22-2011, 12:07 PM   #22
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If it is not completely around the tire, I would say way out of round, way out of balance, or both. Both could be caused by separation.

Take the wheel off and have your tire place put it on a spin balance machine and see what it looks like.
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Old 09-22-2011, 12:21 PM   #23
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I misunderstood your previous post - I thought you were saying that the center was worn down all the way around the tire. Looking at the photo it appears that the part that has abnormal wear is the highest point of the tread. Conclusion: the tire was dragged - brakes locked up or something else caused the wheel to stop turning. A balance problem would cause the tire to be abnormally worn all the way around, not just in one spot. Even one panic stop can cause a tire to get a flat spot - ask any truck driver.
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Old 09-22-2011, 12:32 PM   #24
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No other abnormal wear? What about the area in the upper left of the photo, on the inside? Looks like it's worn tread as well.

Looks to me like unbalanced, tire or running gear.
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Old 09-22-2011, 04:05 PM   #25
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Am I seeing this correctly? Higher on both outside edges, higher in the middle and depressed in between? Like a "w" if you look longitudinally (a cross section) of the tread? And only 10" of the circumference?

If so, I think a structural issue with the belts and/or carcase fabric. sumpin' broke in der.
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Old 09-23-2011, 10:06 AM   #26
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Thnx to all. A wealth of info here. Am now in search of replacement tires again. Have given up on the GYM 's. Looking at the Michelin LTX 235/75R 15. Anyone had any experience with these or other Michelin products?
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Old 09-23-2011, 11:30 AM   #27
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Jake,

Have the LTX's on the TV, very happy with them, 38k+ with no problems and plenty left.

Don't see why they wouldn't work well for you.

Bob
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Old 09-23-2011, 12:07 PM   #28
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"Looking at the Michelin LTX 235/75R 15. Anyone had any experience with these or other Michelin products?"

got the Sears version of the Michlen LTX 235/75R 15 on my 25' Excella. Been on for 3 years. been to Alaska and a lot of other places. No problems at all. no visible wear at all. rated for 1980 or so lbs each at 50 psi. Thats where I run them. gives me about 2200 lbs total to spare over the actual axle loading of 5800 lbs.

went on a caravan with a former Goodyear tire desinger. He was running Goodyear Wranglers on his Airstream. I took that as a hint.
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