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Old 07-17-2016, 06:15 PM   #1
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Goodyear Marathon Disaster Adverted

Prior to our road trip in the summer of 2015 the Goodyear Marathon tires on our 2013 Flying Cloud 27FB were showing relatively even wear and decent tread depth remaining. We had an epic trip last year traveling to the 5 national parks in Utah and then over to California up Hwy 101 through Big Sur, in to Yosemite with a final stop at Crater Lake before returning home to the Seattle area. We keep speeds at or below 65 MPH and all on on paved roads with the exception of the occasional campground gravel road. We encountered no significant rough patches or large pot holes, but as this was a July/August temp the road temps and tire temps were higher than previously experienced.

Upon return from the trip and adding 3600 miles to our tally two of the Goodyear Marathons were showing significant wear on the outer edges. One to the point of potential tread separation. In the photo below the street side tires on are the top and rear tires are to the left of the photo. You can observe an interesting pattern of wear on the outside of the curb side rear tire and street side front tire.

I am not sure if this is worth pursuing with Goodyear, but I am interested in hearing others experience here. Regardless we have upgraded to 16" wheels, Michelin LT225/75R16 Load Range E LTX M/S2, and Centramatic Balancers. We also had a an axle alignment performed for good measure.

The last step is to dial in on the right tire pressure for the new 16" tires. Airstream show 80 PSI on models with 16" tires arriving from the factory but this feels like it will result in a harsh ride. Looks like I have lots of forum reading and research ahead of me
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Old 07-17-2016, 06:43 PM   #2
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Not to support Goodyear but the first thing you check is the axle alignment. I suspect they are so far out that you will be able to see it without a straight edge set across the center line of them while on the trailer.
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Old 07-17-2016, 07:18 PM   #3
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Totally agree and we had a re-alignment done prior to mounting the new wheels/tires. I unfortunately did not write down how much of an adjustment was necessary. The alignment shop mentioned it was a "minor" adjustment.
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Old 07-17-2016, 07:21 PM   #4
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That wear pattern is not caused by the tired but by the axle/wheel having way to much positive camber. If not fixed you will have the same result in your michelins.
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Old 07-17-2016, 07:25 PM   #5
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Not to support Goodyear but the first thing you check is the axle alignment. I suspect they are so far out that you will be able to see it without a straight edge set across the center line of them while on the trailer.
Not sure what shop fixed the alignment but unless they had very specific equipment for aligning these type axles, which is rare, they probably ripped you off. The axles actually have to be bent for this type of alignment. It's not a simple wrench like adjustment like on cars or trucks.
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Old 07-17-2016, 07:38 PM   #6
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Thanks for your concern. We contacted Dexter Axle to locate a alignment shop in the Seattle area. They recommended Kimball's Alignment in Tacoma, WA. Service took about 3 hours for a dual axle trailer and ran $340 with tax.

The tech working on the trailer make me ensure we were only going a short distance at low speeds when he caught the tire damage. Luckily we only had a 20 mile journey back to the Airstream dealer for the tire swap and other maintenance.

I was pleased with the service I received and would recommend Kimball's to others looking for an alignment shop in western Washington.
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Old 07-17-2016, 07:41 PM   #7
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I am glad that you now have Michelins. I am sure you will sleep much better at night now. I agree with the previous posters, the wear pattern you show in the photos have nothing to do with the tire but everything to do with the alignment of your trailer. Put whatever you want on and you will probably see the same pattern over time.

And when you said, "One to the point of potential tread separation", I think you were simply restating what the critics say about the Marathons. I really don't think that tread separation shows by a worn strip on the edge of the tire. I might be wrong here but I think separation happens more in the center of the tire and it has devastating consequences.

Again, happy to know you have a new set of tires. Also, kudos to you for paying attention to everything. Keep an eye on the new tires and you should be good to go for a long time.
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Old 07-17-2016, 08:49 PM   #8
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Sounds like you are well on top of it and made good choices.

There are never-ending discussions on tire pressure for the 16" Michelins, a lot of us use 65 psi for a softer ride. We do and have no stuff bouncing around in our trailer, or parts coming loose. Part of this is tow vehicle suspension and unsprung weight, as well as flexible w.d. bars, but the tire pressure looks good.
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Old 07-17-2016, 09:02 PM   #9
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Not sure what shop fixed the alignment but unless they had very specific equipment for aligning these type axles, which is rare, they probably ripped you off. The axles actually have to be bent for this type of alignment. It's not a simple wrench like adjustment like on cars or trucks.
Many Truck trailer shops have the equipment to bend the axles. Just make sure you find one that knows what they are doing. Do not consider a dealer.
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Old 07-18-2016, 07:03 AM   #10
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Many Truck trailer shops have the equipment to bend the axles. Just make sure you find one that knows what they are doing. Do not consider a dealer.
A dealer might be able to point you to a shop they use. We asked the Boise service manager and he referred us to a shop in Ontario, OR. They got us right in and the problem was fixed. $150 for the front axle. The rear was fine.
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Old 07-18-2016, 07:21 AM   #11
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Curious if you have a TPMS? Did the 2 tires with excessive wear run hotter or with higher pressures than the others? Did all the wear occur on this one trip? Have the tires been rotated?

Just interested to know how quickly that much wear can occur. Is this an accumulation of the tires total life or was it just this one trip because the tires had been rotated recently. Good catch before having a blow out.

Safe travels
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Old 07-18-2016, 07:52 AM   #12
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Unless he had frequent inspections of the tires he really can't answer that question. That ware is a function of the alignment and there is not way to tell for sure when the axle bent. It could have come from the factory, most likely that way, or bent on the road.
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Old 07-18-2016, 08:13 AM   #13
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Story starts off blaming the tires just by the title of the post when the actual cause of the wear had nothing to do with the tire brand. Reminds me of reading a yellow rag headline. Funny stuff.
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Old 07-18-2016, 08:49 AM   #14
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I think beating up on GYM is a national forum sport. Reminds me to take everything I read here with a grain of salt.
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