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Old 06-07-2016, 03:26 AM   #41
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Originally Posted by RamblinManGa View Post
Hi from AZ. . . as my old man told me, opinions are like . . . noses, everybody has one, particularly when it comes to tires ! Add to that the 'if you don't do it like me, you're an idiot' faction & you have a never ending tire debate. Fact. . . I've had 3 ASs with 15" wheels & Carlisles / GYMs and NEVER had a failure ! ( 6 years & about 35k miles ) I keep them covered & properly inflated. Do I think you should buy LT or ST tires ? Nope, your business, & I hope everybody weighs the options, & makes good choices for them. . . OK, I'm done......... good luck, Craig

Well you don't have to be so logical and nice about it! 😡
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(In case the emojis fail - that was thick sarcasm to demonstrate appreciation)
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Old 06-07-2016, 06:36 AM   #42
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Originally Posted by dcasr View Post
I too run E rated Maxxis on my 1990 29' Excella and had tread separation in year 3. I ran them at 75-80 psi and one one each side (2 out of 4) began to have tread separation. My Tire Minder system alerted me to pressure loss before any damage was done fortunately (paid for itself at once!). I replaced all four tires with new Maxxis and kept the two "good" ones for spares. I'm in year 2 of these new ones, and traveling with two spares just in case.

Next year I'm trading in my 15' aluminum rims and going to 16" and getting the Michelin LT tires that AS puts on some of their higher priced units. I do have some rivets inside that have popped, but then the Excella is 26 yrs old.

Air loss is not usually an early indication of Tread Separation but of a puncture or loss or air from leaking valve. Tread separation can many times be seen when doing an annual "Free Spin" tire roundness test as seen in video.
I have covered the process of doing your own inspection in a post on my blog.

Loss of air is many times an early warning of and cause of Run Low Flex Failure. You can learn more about that condition with simple Google of the term "run low flex failure"

Tread separation normally takes months to develop and grow. Run Low Flex can happen in just a few minutes.
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Old 06-07-2016, 06:39 AM   #43
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My failures looked like this. Note the failed tire next to a good tire.

These are the E rated Maxxis tires. Air infiltrated between the belts and the tread. Lucky I caught these prior to blowing out on the road.

Jack

Did you report the failure to NHTSA on their complaint form? Without numbers action to improve quality and fitment questions of tires on RVs will not improve.
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Old 06-07-2016, 06:42 AM   #44
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And your point is....?

The punishment delivered to tires by a 2 or 3 axle trailer is quite different than to a single-axle trailer due to side-loading, twisting, mis-alignment of axles, and such. The Bambis have a much better record of tire durability due to lighter weights and less sidewall stress from maneuvering than multi-axle trailers.
This is not to say that Bambis don't occasion tire failures due to overloading, underinflation, old-age, lack of regular inspection, and other owner-induced problems.
The stress you are talking about have a specific name. Interply Shear.

If you Google "Interply SHear tire" you can learn more.
This is real engineering. Something that seems to be lacking in the RV industry.
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Old 06-07-2016, 06:47 AM   #45
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The tire placard on the side of my trailer says 65 mph.
I'm sure it has to do with weight, GVW, and tire size.


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Until earlier this year when under pressure from US Government ST tires had speed limit of 65 mph. Some ST tires are now rated for 75 mph. Only tires with Speed symbol or specific words molded on tire sidewall are so rated.
According to the major tire companies, you know the ones with real R&D departments and understanding of tire usage in the US also limit speed to 75 in RV application no matter what the individual tire rating is.
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Old 06-07-2016, 02:30 PM   #46
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The point is moot.
I won't be buying any more ST tires.


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Old 06-07-2016, 11:26 PM   #47
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Originally Posted by Tireman9 View Post
Did you report the failure to NHTSA on their complaint form? Without numbers action to improve quality and fitment questions of tires on RVs will not improve.


Unfortunately I didn't think about this aspect. Since this was my second set of ST tires with belt slippage in roughly the same period of use, I attributed it to the fact that expecting a full three years of life in my specific application was not reasonable for an ST tire. Note that I said "my specific application", since I know others get much better life. On the other hand those folks aren't pulling trailers that sit on a tandem axle and weigh between 8,600-9,100 lbs.

Jack
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Old 06-08-2016, 12:21 AM   #48
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Originally Posted by Tireman9 View Post
Until earlier this year when under pressure from US Government ST tires had speed limit of 65 mph. Some ST tires are now rated for 75 mph. Only tires with Speed symbol or specific words molded on tire sidewall are so rated.
According to the major tire companies, you know the ones with real R&D departments and understanding of tire usage in the US also limit speed to 75 in RV application no matter what the individual tire rating is.
My st rated tires Carlisle hd radial have an M speed rating which is 81 mph
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Old 06-08-2016, 03:07 PM   #49
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Unfortunately I didn't think about this aspect. Since this was my second set of ST tires with belt slippage in roughly the same period of use, I attributed it to the fact that expecting a full three years of life in my specific application was not reasonable for an ST tire. Note that I said "my specific application", since I know others get much better life. On the other hand those folks aren't pulling trailers that sit on a tandem axle and weigh between 8,600-9,100 lbs.

Jack
IMO even ST tires should not have this type of failure in 4-5 years.
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Old 06-08-2016, 07:47 PM   #50
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Hercules

I plan to get a set of Hercules tires when the Goodyears time is up.
They make 15 inch tires in Load range ' D' and ' E ' . I have owned them before and never had an issue with them on my previous travel trailer over a three year span.

A friend of mine recommended Hercules to me as he had them on his Horse trailer. 36 month warranty.
They are hard to find. check their website out , it has a chart on load ratings. http://www.herculestire.com/tire-gal...ial/specialty/
If you don't run that ' solid white line' you lessen your risk on picking something up in a tire.
Have a good one
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