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Old 12-21-2014, 11:26 PM   #15
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Date code on sidewall. Tire Rack site has excellent tech section articles for details.


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Old 12-22-2014, 06:08 AM   #16
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Quote:
Originally Posted by gcann View Post
How do you determine when the tire was manufactured?

Long version: Barry's Tire Tech

Short version: There is a DOT code on the sidewall. The last 4 digits are the date in a week/week/year/year format.
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Old 12-22-2014, 08:56 AM   #17
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If you have an 8 lug wheel like on a 3/4-1 ton truck, you can add a set of Centramatics and no telling how many miles you could get off of your new Michelins. They don't make them for any 1/2 ton TV's, but they do make them for our Airstreams. I have them on both my TV and my AS.

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Old 12-23-2014, 09:38 AM   #18
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Thanks everyone for info on tires
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Old 01-19-2015, 02:24 PM   #19
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OK Guys; Help. Somewhere on this thread, I read where Michelin no longer made a LT truck tire in a 235 75 r 15 xl 108T. I was just at my local DT and they stock this tire. I went ahead and scheduled a set to be installed along with a TPM. These are to be installed on my 2010 FC 25 ft, front bed. The tires are rated at 2138# less 10% or about 1900#. $982.49 inc balance, install, TPM and tax.
Comments, or should I have asked? Still have time to change.
mike
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Old 01-19-2015, 03:07 PM   #20
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Ideally, 1900-lbs less an additional 15%. Or, 1600-lbs per tire. A 6500-lb trailer IF there are no large imbalances across each axle.

Best to weigh the trailer at each wheel position with full fresh water, full propane and usual camping load. And WDH in tension.

You might find examples of those who claim what you have is fine, but keep in mind this recommendation as it is also with full sidewall marking air pressure.

Brand is right, AFAIK, so do a search on posts by Andrew_T and Michelin.

A reserve capacity is the thing.
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Old 01-19-2015, 03:25 PM   #21
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correction: 225 75r 15 Michelin rated at 2138#. Are you saying reduce weight capacity by 25%?
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Old 01-19-2015, 03:34 PM   #22
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Originally Posted by Airtandem View Post
correction: 225 75r 15 Michelin rated at 2138#. Are you saying reduce weight capacity by 25%?

De-rate per vehicle use as you did above. Then take 12-15% off of that to maintain adequate reserve capacity is the conservative recommendation. At full pressure.

With less pressure (not recommended) take off even more. Or for higher speeds. Or very hot weather. Etc.

See posts by tire engineers CapriRacer and Tireman9.

Changing from ST isn't straightforward, unfortunately.

See Andys tire recommendation if that is the path you want.
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Old 01-19-2015, 04:48 PM   #23
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Using those numbers I've come to the conclusion you can either just get the XL tires or you must upgrade 16's if switching from an ST tire if you're trailer is over 25ft.
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Old 01-22-2015, 09:30 PM   #24
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maxxis

Have not seen much comment about Maxxis tires. After thinking about changing to 16" wheels to go Michelin LT for load rating, we are looking at Maxxis 225/75R15 as an alternative. It would allow us to stay with the wheels and moon hubcaps we have already, keeping the historic appearance. We would have a TPMS as a tool to try to avoid failures, although nothing stops a sudden blowout. Our rig also has steel skids at present, if those are smart to retain.
Wisdom to share?
Thanks,
Jim +Jane
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Old 01-22-2015, 10:46 PM   #25
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Comments on Carilsle Trailer tires 225 75r 15 E rated?
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Old 01-23-2015, 02:09 AM   #26
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Our experience with tires:
  • Goodyear Marathons (GYM), LR-D ST tires

    April 2005 -- Purchased new 19' Bambi, which came with three GYMs installed.

    July 2008 -- One GYM failed due to blowout and tread separation. When replacing the first GYM, tire tech discovered that the second GYM had radial belt creep (tread still intact, but steel belt created bulge and squiggle in tread). Purchased one new Carlisle LR-E ST tire and continued roadtrip with the third, previously unused, GYM spare and the new Carlisle tire on the ground; and used the second GYM (with belt creep) as a spare.

  • Maxxis, LR-E ST tires

    October 2008 -- Purchased two Maxxis tires. Discarded the second defective GYM, and moved the Carlisle ST tire to the spare tire carrier.

    January 2011 -- One Maxxis tire failed due to radial belt creep; tread remained intact. Discount Tire refunded cost of one Maxxis tire, which was used towards the purchase of 16" wheels and LT tires.

  • Michelin XPS Rib, LR-E LT tires

    January 2011 to date -- Absolutely, no tire problems after switching to XPS Ribs.
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Old 01-24-2015, 02:07 AM   #27
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Old 01-24-2015, 05:47 AM   #28
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ST tires, three years only, according to my tire guy. Jim
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