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Old 08-26-2006, 08:52 PM   #15
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Tire Bias or Radial

You are still left with the fact (at least when I wrote as many manufacturere as I could find, Denman, GoodYear, GreenBall, LoadStar, Maxxis, Nankang, to name a few) had a Speed rating over 65 MPH except Cooper(for the ST225/75R15 of course). I personally don't like running that close to the maximun designed limit of anything, so I don't. The tire I went to has a speed rating of 99 MPH (Q). No I never intend to go that fast, but for a few dollars more I hope to not be loosing tires instead of enjoying the vacation.
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Old 08-26-2006, 08:53 PM   #16
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tires

I know I am probably 1 of the few who think this,but I run 235/15 radial truck on my 86 31'. I had them on my 73 31' for over 25,000 miles without a failure and I have 37,000 on my 86 31' witout a problem.They are the same tires I use on my 1/2 ton truck. They are 235/15 AT lemans radials and they come from firestone load range c.I have pulled thru 100 degree heat at 70 mph many times and I pull at least 200 miles a month thru the ozark mtn,s.I repeat I have never had a problem..The trailor pulls extremely smoothly With them.
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Old 08-26-2006, 09:00 PM   #17
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Tire Bias or radial

joel
No you arn't the only one that thinks that.
A pattern seems to be forming here.
1. 31 foot trailers seem to have more trouble than the shorter trailers.
2. Any LT tire seems to better than the ST tires on the 31 foot trailers.
I say this then Bambi owners chime in and tell us of blisters and shifted belts on their ST tires.
I have never had difficuilty with Michelin or BF Goodrich(Michelin), so I went with that, selecting a tire that was suggested by others that turned out to be the same Outside Diameter as the original Michelin 7.00-15 XCA that came on my trailer and the same width as the Marathon and is a LT tire.
Havent had a single problem yet.(knock on wood)
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Old 08-26-2006, 09:04 PM   #18
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Beginner, what size tire did you go with?

Maybe that's the trick when you go to 28.3" 225/75 tire it has to turn more rev's per mile than a 30" tire 7.00x15 ?
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Old 08-26-2006, 09:17 PM   #19
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Boy, DO NOT go to coopertires.com if you're using a wireless card outside of an EVDO area. It's flash hell.

Lamar
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Old 08-26-2006, 09:26 PM   #20
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Before you buy, check the "load rating" on Load Range "D" belted tires. NO one should be putting these on a 31 footer. Max carrying capacity on a 7.00X15 belted tire is 2,040 lbs, The 7.00R15's carry a little more. ST225X75X15, doesn't matter who makes , max poundage carried is 2,540 lbs.
My only gripe about "ST" tires is the speed restriction of 65mph. May try LT's on our '79 Trade Wind International.
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Old 08-26-2006, 09:29 PM   #21
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Tire Bias or radial

Lipets
At the recommendation of others on this forum, and after asking questions of commercial businesses that use trailers that had the ST225/75R15 LRD tire on their trailers when they purchased them AND determining that the dimentions of the tire suggested would fit in my fender wells (whew), I went to a 16x7 inch wheel and the BF Goodrich Commercial T/A Load Range D. Bought 5 tires and wheels. Yes it was expensive. The price of having a panel replaced I understand is in the range of 4 to 6 thousand dollars not counting the aggrivation and ruined outing. I spent about a grand (1,000.$)
I have a 1984 Excella, 31 Foot.
My Service manual that I received from Airstream listed the Michelin XCA as the recommended Tire.
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Old 08-26-2006, 09:56 PM   #22
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Quote:
Originally Posted by Coloradobus
Before you buy, check the "load rating" on Load Range "D" belted tires. NO one should be putting these on a 31 footer. Max carrying capacity on a 7.00X15 belted tire is 2,040 lbs, The 7.00R15's carry a little more. ST225X75X15, doesn't matter who makes , max poundage carried is 2,540 lbs.
Ok but 4 x 2040 = 8160 the gvw on the trailer is 7100 loaded, about 5,000 empty.

So that tire apears to be within specs
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Old 08-26-2006, 10:31 PM   #23
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I'm going to try Maxxis,can't find them discounted so I'll order direct from Maxxis around $111 each with free to minimal ship charge I have read many favorable reports on other sites,and have noticed a couple custom utility trailer Co. using them. Darrell--- Maxxis claims "n" speed rating 87mph
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Old 08-26-2006, 11:32 PM   #24
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I went to three different dealers in my area and was all set up to buy Marathons based on other peoples and vendors recommendations. All three were willing to mount them but pointed to recent problems and offered alternatives. I stepped back and am now looking through these posts and links provided.
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Old 08-27-2006, 12:05 AM   #25
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hi lipets

any tire question opens a can o worms...

and a lot of goofy info...

here is some more...

225/70/15 are in no way low profile...
they are 70% as tall as wide...
this size is plenty tall...as in 7 inches tall on the wheel...
smooth ride, lots of load carrying capacity and widely available...
they are plenty tall for pot holes and curbs and so on....
these issues that trailer tires encounter...

but they don't corner like car tires, or provide traction for acceleration...
because they aren't doing these things...

they do provide traction for braking and the side walls do resist lateral forces...when properly inflated...

yes there are failures....
and yes there are issues...
but there are googlezillion of these things...
on the road, in storage lots, back yards, up on blocks and so on...

there is also usually 1-2 folks on every forum...
who just beat them to death...
'axe to grind' comes to mind...

the folks having good results 'tire' of posting on this over and over...
no axe to grind and happy campers...

and few who have a failure ever admit to running with low pressures
or over load ratings or only one tire or age related failure or stored under inflated....and so on....

keep 'em properly inflated and they are great tires imo...side wall lumps and all...

just don't expect them to last forever just because the tread isn't worn...


still maxxis makes good tires and IF/when my tires are tired...
and
i can find a LOCAL vendor...might try maxxis...

20,000miles this year on 6 marathons at 70+mph...
no issues.
i'm happy with them...

so, i'd never lose sleep over running new, fresh, inflated marathons...

and it is much much easier to find a goodyear vendor, or trailer vendor or rv shop...that will have marathons...

also the speed rating is a confusing issue....
the load ratings are tested and certified to 65 mph....
the speed rating isn't used the same as that on car tires...

that doesn't mean the tires explode or fall off going faster....
even good year tells folks what to do who use them over 65mpg...
under inflation or overloading are the issues
not speed when properly inflated and loaded correctly...

so add that to the goofy knowledge base...on tires.

cheers
2air'
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Old 08-27-2006, 12:37 AM   #26
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To forgive is devine , my marathon was properly inflated and not overloaded and new when the side wall blew. Darrell
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Old 08-27-2006, 12:53 AM   #27
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2 Spares?

I just had two tires fail on my 31' 78 Land Yacht in 300 miles. The first was a Marathon that shed the belt but never lost air. The second was a Carlisle that shredded because I did not hear it blow. The Marathon was made and purchased in 2002. The Carlisle was purchased in 2003 but mfg'd in 2000. the tires had less than 5K miles and were stored inside. I jack the trailer up to relieve any twisting stress due to positioning the A/S into a tight spot, and set the tires on aluminium foil to keep them off the relatively new concrete.

Recovering from the second failure is a story in itself and I will not burden the viewer with that. All tire were load range D, inflated to 62 PSI. What do I do now - replace every two years? Go to load range E? Install 1/4" steel plates behind the wheel well? Carry 2 spares?

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Old 08-27-2006, 02:50 AM   #28
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Quote:
Originally Posted by Darrell Root
To forgive is devine , my marathon was properly inflated and not overloaded and new when the side wall blew. Darrell
hi darrell
i don't doubt that your failure was a defective tire.
please tell goodyear about it.
that is the most important message
beginner has tried to convey over and over,
even providing the link.

you experienced 1 tire failure? or many?
wasn't that an older production tire?

see that is part of what adds to the confusion...
i recall reading what 5-6-7+ posts regarding your tire issue.
naturally we post about important issues multiple times
and i'm not suggesting you or anyone stop retelling a single event, or mulitple events...

reads like harryw has had 2.

as humans reading these posts,
do we remember the reports as several reports of failure
or a single tire failure reported several times?
so when we think about it later or pass it on...
how many tires failed?

the most useful thing anyone can do is file a formal report as beginner suggests...

and get some new tires!

most of us are 'trained' to expect the factory tires
on our cars/trucks....and by assoication trailers
to be 'cheapo' entry level tires...
usually i upgrade my passenger tires as soon as i can afford it..

you know i DID have a michelin rv tire fail in 1991...
inner of curb side duallies....
those tires were 7-9 years old and had 30-40k miles on them...
replaced the one with a bridgestone...all the shop had.
and got 6 fresh michelins...later that month.
what a pain in the butt that whole experience was.....

oh, wait sorry for the rubber flashback...

anyway,

i love the maxxis ads...with the airstream

and i love my tubeless mnt bike tires....
of course i did have a 60$ bike tire
blow a sidewall last week
in the driveway no less, not on a trail...
and it only had 200 miles on it!
and it ruined a 500$ bike wheel!

did i buy more of this model?
no because the dealer was out!
but i'll be first in line for the next batch!

so i'm hoping you and others
will put some on their trailers
and tell us how they perform...

i may need 6/7 new ones
in another 2 years or
another 20-30,000 miles of towing....

and of course i do forgive you....

cheers
2air'
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