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Old 10-19-2015, 10:58 PM   #15
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Tow a 31' and travel light, all tanks empty. Tire was about 6 years old, low mileage and never in the sun. On the way to campsite last weekend, all tires exhibited normal temps and pressures monitored by TPMS. Highway travel between 60-65 mph. Noticed bubble (much smaller) while emptying tanks before departure (lucky to change prior to being on the road). When we got home, went to check pressure of tire in back of truck and there you have it. The tires on my Excursion are 12 years old with 75K, sits outside in the summer, tire dealer says keep running then until visible sign of deterioration or below min tread. Bearings maintained. Can't say much about alignment, but tow absolutely level.
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Old 10-19-2015, 11:04 PM   #16
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Tow a 31' and travel light, all tanks empty. Tire was about 6 years old, low mileage and never in the sun.
A 6 year old tire is at the end (or past depending on who you talk to) of it's useful life regardless of the mileage.
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Old 10-19-2015, 11:21 PM   #17
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The tires on my Excursion are 12 years old with 75K, sits outside in the summer, tire dealer says keep running then until visible sign of deterioration or below min tread.
From everything I have heard 12 years is a geriatric tire. Tires deteriorate from the inside out. Personally I would run from this dealer.
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Old 10-19-2015, 11:21 PM   #18
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I figured there might be consensus on age, but I'm having trouble digesting that. I can see a sun damaged tire with visible sidewall cracks and such, but a tread/sidewall bubble while still holding 65#, blame failure on age?
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Old 10-19-2015, 11:29 PM   #19
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Looks like 6 to 10 years for tire useful age...
http://www.tirerack.com/tires/tirete...jsp?techid=183
Do You Really Need To Replace Those Tires?
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Old 10-19-2015, 11:36 PM   #20
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Just wondering, my 2003 Excursion, never had the spare ever removed from stowed location, should I replace that too?
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Old 10-20-2015, 01:34 AM   #21
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Just wondering, my 2003 Excursion, never had the spare ever removed from stowed location, should I replace that too?
OMG yes on all of them. Generally 6 years is a base point for replacement, if they still look really good, stretch to 8 years. Tires oxidize and wear with age as well as use. 12 years is seriously asking for trouble, if a mechanic told me that I would sternly correct him.
The spare needs replacement as well, that can easily be stretched to 8 years if it still looks good. Since it's the spare just get a inexpensive one sized the same for limping to get a new one on your regular wheel.
Blowouts at highway speed can be disastrous!
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Old 10-20-2015, 06:58 AM   #22
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ST tire lifetime is no more than four years, five max, according to my tire guy.
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Old 10-20-2015, 07:52 AM   #23
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It's a sebaceous cyst. See your dermatologist.
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Old 10-20-2015, 08:22 AM   #24
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A member of the New England Unit shared this picture on our Facebook and gave me permission to share it here in hopes maybe our tire engineer folks could chime in on this. What happened here?

Attachment 250694
Does he still have the tire? If so, then we can test out what I am about to say.

I think that is the result of the tire hitting an object and breaking the ply cords. No, that is NOT from a defect, because this type of defect would have been there from the git-go and would have been visible in the form of a bulge.

How to test to see if I am right? Dismount the tire, and cut circumferentially along the sidewall in a long continuous cut through where the bulge is, including a large amount on each side of the bulge. Then look at the cords in the cut section. Where the bulge was, the cords should be imbedded a bit shallower, meaning the rubber matrix wasn't holding the cords in tension, and the cords that look like that are broken.
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Old 10-20-2015, 11:20 AM   #25
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My "theory":
Tread separation first, and then air between the belts and the rubber-
Just Puff-up-athons/Swollen-up-athons doing what they do-
Marathon is right- 26 miles and it is toast.
This last 1,000 mile trip on new 16" LT tires at 65 mph sure had a lot of peace of mind-
Glad the Goodyears are off my trailer before they exploded and did damage to my trailer-
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Old 10-20-2015, 11:29 AM   #26
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Ply
Quote:
Originally Posted by SteveSueMac View Post
A member of the New England Unit shared this picture on our Facebook and gave me permission to share it here in hopes maybe our tire engineer folks could chime in on this. What happened here?

Attachment 250694

Ply separation, not uncommon with Goodyear Marathons.
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Old 10-20-2015, 11:44 AM   #27
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In my opinion ST tires are a scam to milk "disposable money" from the RV crowd.

Go with LT tires that wear longer and last better.

Just a side point, I would have snuck up on that tire and removed the valve core before I removed it from the trailer.


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Old 10-20-2015, 11:51 AM   #28
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my knee looked like that once.
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