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Old 01-02-2016, 01:50 PM   #1
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A Marathon tire repair

Our OEM Goodyear Marathon tires were six years old and going strong when we replaced them with a new set of Marathon tires three years ago.

I believe our Marathon ST215/75R14 tires have done well for us mainly because I do not drive faster than their maximum speed rating of 65 mph and I meticulously make sure their cold pressure reading is as close to the specified 50 psi as possible, and I continuously monitor them with the PressurePro tire pressure monitoring system.

Last month, a 1" automotive Torx hex washer head machine screw became embedded in the crown of one of our tires. The tire was repairable because the puncture was in the crown, rather than the shoulder or sidewall, and was not larger than 1/4-inch (6mm) in diameter.

I learned that a proper tire repair is done by removing the tire from the wheel, inspecting inside and out for damage, and applying a rubber stem, or plug, to fill the hole AND a patch to seal the inner liner. (A common repair unit is a one-piece unit with a stem and patch portion, sometimes called a mushroom style patch-plug.)

More information on this is seen in the "Patch, plug, or replace?" section of The (nearly) Complete Guide to Airstream Maintenance.

The full story and more photos, along with how I changed my tire, step-by-step, is seen in my article, "A Marathon tire repair," History Safari Express.
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Old 01-02-2016, 09:26 PM   #2
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Proper Tire Repair
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Old 01-03-2016, 08:31 AM   #3
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I think I would put a new set of tires on it if they are that old. Especially, if you plan on a long trip in the summer. The plug-patch is the way to patch one but if you are on the road and you don't have a spare a simple plug will get you to the tire place. They can pull it out and patch it proper when you get to a tire place. This can be done quicker than changing a tire.

Perry
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Old 01-03-2016, 09:21 AM   #4
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I enjoyed this ...
http://www.trailerlife.com/trailer-h...-a-tire-guide/
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Old 01-03-2016, 12:07 PM   #5
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Originally Posted by perryg114 View Post
I think I would put a new set of tires on it if they are that old. Especially, if you plan on a long trip in the summer. The plug-patch is the way to patch one but if you are on the road and you don't have a spare a simple plug will get you to the tire place. They can pull it out and patch it proper when you get to a tire place. This can be done quicker than changing a tire.

Perry
Thanks, Perry, for your comments.

Based on the way we use our trailer, our tires are not "that old".

Discount Tire's "Trailer Facts" states that the projected life of a normal trailer tire (ST) is 3-5 years and is "limited by time and duty cycles."

We do not go on long trips. Once a month, from November to May, I pull the trailer to one of our local campgrounds within 100 miles of San Diego.

As mentioned in my first post, my previous Marathon tires were 6 years old when they were retired. So I'm hoping my current tires will be fine until they are 5 years old, when I plan to replace them.

Additional information and photos: "A Marathon tire repair" on History Safari Express, seen on Airstream Life's Recommended Blogs.
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Old 01-03-2016, 12:51 PM   #6
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Regarding SilverGate's comment: "Based on the way we use our trailer, our tires are not 'that old'.

See link to summary of GYM tire failures reported on Tire Failure Poll:

http://www.airforums.com/forums/f44/...ml#post1339027

Note: The GYM failure rate increases steadily and peaks in year 3; and I suspect the reason that the quantity of GYM failures dropped during year 4 and later is that most people had replaced them before that time. Otherwise the number of failures would probably have continued increasing as the tires aged.
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Old 01-03-2016, 02:07 PM   #7
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Good for you, hang in there. You are right on regarding repair, in my opinion. The new Airstream recommended air pressure is 65 lb. I believe. I went up to 65 and it works great. I think one should look at the condition of the tire as well as age. I think 10 year old tires are find if well taken care of. My Marathons are doing very well.
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Old 01-03-2016, 02:11 PM   #8
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FYI:
I used my OEM Goodyear Marathons on my Hi-Lo for seven years before trading it in for an Airstream. 25' 'Cloud.
GYMs were fine; probably at they're expiry date, but still fine. Of course, I kept the tire pressures at 50, covered the tires from Sun, and used a TPM on the road. I guess that it worked.
My new AS.s are shod with Michelins. should be finer.
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Old 01-03-2016, 04:14 PM   #9
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Phoenix"s comment:
..
Note: The GYM failure rate increases steadily and peaks in year 3; and I suspect the reason that the quantity of GYM failures dropped during year 4 and later is that most people had replaced them before that time. Otherwise the number of failures would probably have continued increasing as the tires aged.

...

raises the important consequence of the number of observations in a population. Maybe there are more GYM problems because there are sooo many of them and there are so few Michelin LT problems because there are soo few of them at this time?
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Old 01-03-2016, 05:11 PM   #10
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Originally Posted by TheCabin View Post
Phoenix"s comment:
..
Note: The GYM failure rate increases steadily and peaks in year 3; and I suspect the reason that the quantity of GYM failures dropped during year 4 and later is that most people had replaced them before that time. Otherwise the number of failures would probably have continued increasing as the tires aged.

...

raises the important consequence of the number of observations in a population. Maybe there are more GYM problems because there are sooo many of them and there are so few Michelin LT problems because there are soo few of them at this time?
I would't ever own a GYM tire if they were given to me free.
The only tire I ever owned that had to be aired as frequently as I filled my gas tank. The only tire I ever owned that I had a massive thread separation that turned into a nightmare. The only tire I ever owned that gave heartburn trying to keep at 65 mph or under. The suggestion that there are less reported problems with the Michelin LT because there might be less of them on the road is not even worthy of a comment.
And Airstream should know better than put those crap substandard tires on these expensive trailers.
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Old 01-03-2016, 08:05 PM   #11
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Airstream trailer spare tire removal

During the process of changing my tire, I looked up under the front of the trailer to remove the spare tire and I started to remove the nut from the bolt that was closest to me on the handle that supports the spare tire... this is the hard way, as seen in my post, "A Marathon tire repair." Then, I remembered that it is easier to just pull out the nearby cotter pin, while holding up the handle and removing the bolt.

Colonial Airstream's Patrick Botticelli makes removing the spare tire look easy!

How To Remove Spare Tire
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Old 01-03-2016, 10:06 PM   #12
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Airstream Tire Safety Information

Airstream Tire Safety Information
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Old 01-04-2016, 12:12 PM   #13
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Here's a pic of the screw in our GYM last summer! Put about 1000 miles on it after the fix. Due for a new set this spring. Thinking we will continue with the Marathons although haven't ruled out something different.
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Old 01-04-2016, 06:53 PM   #14
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I would't ever own a GYM tire if they were given to me free.
The only tire I ever owned that had to be aired as frequently as I filled my gas tank. The only tire I ever owned that I had a massive thread separation that turned into a nightmare. The only tire I ever owned that gave heartburn trying to keep at 65 mph or under. The suggestion that there are less reported problems with the Michelin LT because there might be less of them on the road is not even worthy of a comment.
And Airstream should know better than put those crap substandard tires on these expensive trailers.
My sentiments exactly.
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