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Old 03-03-2011, 06:12 PM   #1
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Separation on tread face

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Old 03-03-2011, 06:15 PM   #2
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Please, tell us more...
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Old 03-03-2011, 06:37 PM   #3
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would if I could

I've been trying to add a couple of photos, without success, to show what the results of tread separation looks like on the tread face before tire failure. I discovered it when getting ready for spring. I'll keep trying to get the photos up. Sorry about the delay.
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Old 03-03-2011, 06:39 PM   #4
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This might help:
http://www.airforums.com/forums/f138...tml#post612569
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Old 03-03-2011, 07:02 PM   #5
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I think I've got it

OK. First, thank you Richard for the link.
While getting the Tin Inn ready for travel I did my throrough spring inspection and came across this GYM on the front, curbside. That bald spot, according to my tire dealer, was caused by tread separation. The rest of the tire was ok, just this one bald spot. My last thorough inspection was in the sping of last year. The bald spot was on the inside and even though I check over the tires before every trip I never saw this spot before so I only know the tire was good last spring so don't know how long it took to get like this. The tire date was 3907. My "thorough" spring inspection includes raising each side of the trailer to adjust the brakes and test the break away switch and this year repack bearings; this is when I found the bald spot. I know pictures help me more than descriptions so thought this might help others like me. Also learned to be more vigilant on future tire checks.
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Old 03-03-2011, 07:06 PM   #6
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That must have been a bumpy ride. What type of tiress are these?
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Old 03-03-2011, 07:18 PM   #7
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look like Marathons!
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Old 03-03-2011, 07:27 PM   #8
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They are Marathons. No, it didn't affect the ride at all. The bulge of the separation was worn smooth to the tread of the rest of the face of the tire so there was not actually a bump, it just kept wearing down and I guess would have eventually let go at some point.
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Old 03-03-2011, 09:11 PM   #9
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My tires were starting to look like that, although not as severe. Looked like they were cupping all the way around. New running gear has solved the problem.
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Old 03-03-2011, 10:56 PM   #10
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Frustrating

Over the Winter, there have been 6 Airstreams that I've seen this on at least one tire. When I told the owners of the trailers, they seem to think I'm trying to sell them something. The response has invariably been, "Okay, thanks. We'll probably get some new tires next Fall".
So there are at least a half dozen of these roaming around the Southeast. I only hope the tires last until Fall.
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Old 03-07-2011, 01:55 AM   #11
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I've seen a couple of Goodyear Marathons that looked like this, in photos on this site and on our own Airstream. This is not actually separation (yet); it is from "pounding", caused by an out-of-balance tire and/or wheel/running gear. This might have been preventable if discovered earlier by rebalancing the wheel and tire or using Centramatics. However, it's too late for that now; and being a Marathon, I'd say this was probably inevitable. Please note that I am severly biased AGAINST Marathons, having had both OEM Marathon tires fail after only 2-3 years.

You are lucky you found this when you did. This is an indication of overheating, and here in the desert southwest, tread creep and separation would only be a couple of hundred to 1,000 miles away, especially in the summer.

If I saw these on our Airstream, I might try to make it a few hundred miles in cold weather, at slower speeds, to the next big town to have them replaced. However, I definitely wouldn't try to go another summer on them.
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Old 03-07-2011, 09:21 AM   #12
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Quote:
Originally Posted by GreggH View Post
OK. First, thank you Richard for the link.
While getting the Tin Inn ready for travel I did my throrough spring inspection and came across this GYM on the front, curbside. That bald spot, according to my tire dealer, was caused by tread separation. The rest of the tire was ok, just this one bald spot. My last thorough inspection was in the sping of last year. The bald spot was on the inside and even though I check over the tires before every trip I never saw this spot before so I only know the tire was good last spring so don't know how long it took to get like this. The tire date was 3907. My "thorough" spring inspection includes raising each side of the trailer to adjust the brakes and test the break away switch and this year repack bearings; this is when I found the bald spot. I know pictures help me more than descriptions so thought this might help others like me. Also learned to be more vigilant on future tire checks.
This looks like a belt has let go internally, but not reached the point of tread separation yet, however it shouldn't be long. I'm not so sure if any sort of balancing would have prevented it.
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Old 03-07-2011, 09:36 AM   #13
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Originally Posted by GreggH View Post
OK. First, thank you Richard for the link.
While getting the Tin Inn ready for travel I did my throrough spring inspection and came across this GYM on the front, curbside. That bald spot, according to my tire dealer, was caused by tread separation. The rest of the tire was ok, just this one bald spot. My last thorough inspection was in the sping of last year. The bald spot was on the inside and even though I check over the tires before every trip I never saw this spot before so I only know the tire was good last spring so don't know how long it took to get like this. The tire date was 3907. My "thorough" spring inspection includes raising each side of the trailer to adjust the brakes and test the break away switch and this year repack bearings; this is when I found the bald spot. I know pictures help me more than descriptions so thought this might help others like me. Also learned to be more vigilant on future tire checks.
There are many other irregular wear patterns on that tire.

Several small sections clearly show uneven wear, that typically is caused by "lack of proper running gear balance", along with the possibility of a bad shock absorber.

Installing Centramatic balancers, is the cure for the balancing problems.

Andy
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Old 03-07-2011, 11:22 AM   #14
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Andy,

Does the use of Centramatic balancers preclude the need to balance each tire/wheel, or is it in addition to ensuring the wheels/tires are balanced?

Drew
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