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Old 12-10-2013, 10:20 PM   #15
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I also want to switch to 16in wheels and tires, but why does it has to be Michelins. Wouldn't most any LT 225/75r 16 Load E work? I sure like the price and reviews on the Hankook truck tire.
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Old 12-11-2013, 06:25 AM   #16
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Just contacted Discounttiredirect.com to purchase the Michelin winter tire 225/75R16E LTX.
I was told it's the absolute wrong tire for a trailer and can only be used in 40 or below degree weather. Well, my trailer is in Florida 1/2 the year. He also said these tires will not last more than 6 months because the rubber they are made of is softer.
Some people recommend the Michelin LTX M/S2. Somebody here, Please unconfuse me.
The confusion is in the name. There is no Michelin LTX. There's a Michelin LTX A/S, a Michelin LTX AT/2, a Michelin LTX Winter, a Michelin LTX MS, and a Michelin LTX MS/2.

The only winter tire that is also an LTX is the Michelin LTX Winter. I'm guessing Discount Tire is referring to that. The question is why are you specifying a winter tire? An LTX Winter is not suitable for a trailer - and certainly not an appropriate tire for Florida.
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Old 12-11-2013, 08:00 AM   #17
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What is the purpose of switching to 16" wheels? Can't we buy 15" LT tires?
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Old 12-11-2013, 08:04 AM   #18
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Originally Posted by m.hony View Post
What is the purpose of switching to 16" wheels? Can't we buy 15" LT tires?
I believe it depends on the load rating you need for your particular trailer GVW.

There was not a 15" LT tire that had enough capacity to use on our Classic 30 with GVW=10,000#. So I went with the 16" wheels to get the capacity I needed.

Mind you, I only looked at the Michelins, perhaps someone else makes one?

Brian.
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Old 12-11-2013, 08:13 AM   #19
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Some options on 16" LT tires: Tire Products By Vehicle - Discount Tire

I've had good success for two years, and 20,000 miles now with these: http://www.discounttire.com/dtcs/fin...=TXSINT&cs=225
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Old 12-11-2013, 08:21 AM   #20
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I changed my Michelin 15" tires at 5 years because of sidewall cracking. Will check and probably change the current set at 4 years. I saw no appreciable wear of the tread at 5 years and 40.000 miles on the last set. Just the cracking. Maybe keeping the tires covered from the sun more would help. The spare was not cracked at all. And none of the tires were loosing air.


"What is the purpose of switching to 16" wheels? Can't we buy 15" LT tires."

For the most part, no we can not. I think maybe Komo still sells one? Michelin calls the 15" tire the LT, but it is rated as a P tire with 50 psi inflation limit. On the very heavy Airstreams the 15" XL tires may be right at top load limit. So some people go to 16" for that. Some go to 16" wheels for smaller trailers because they want to be able to buy either LT tires or trailer rated tires.
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Old 12-11-2013, 08:33 AM   #21
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Perhaps the reason the conversation centers on the Michelin tires relates to the fact that Airstream installs this specific Michelin tire (Michelin part number 05681 or Michelin LT 225/75R16E LTX M/S2) on SenDel T03-66655T wheels on their Eddie Bauer model trailers. Every other trailer Airstream makes gets the 15" Good Year Marathons which seems to have a checkered reliability from reading the forums in the trailer industry.

I have been a Michelin tire user for over 48 years and have never had a blowout. The Michelin do NOT have the 65mph speed limit printed on the sidewall like the GYM tires.

I selected the 15" Michelin LTX (P) 235/75R15 XL tires for my 25FB as there was plenty of load capacity remaining as a safety margin in that application. My model 30 Classic tiptoes across the scales at 10,000 pounds which requires a Load E 16" tire as no Load E 15" are available from Michelin.

Perhaps the more important issue concerns the Airstream two year warranty. If I use exactly the same tires and wheels Airstream uses, then there can be no argument about tires causing damage to the suspension or the trailer.

The factory sticker requires 65psi on the GYM tires and 80 psi on the Michelin tires. There seems to be little discussion about tire pressure setting on the GYM tire, but lots of discussion on the Michelin tire pressure settings.

I am installing the Dill TPMS 1503-453 system when the Michelin tires are mounted to the wheels as an additional source of tire operational performance information to help with safety.

I am installing the spare tire on a SenDel S62-66655G galvanized steel wheel with a 3,500 pound rating and keeping the fifth aluminum wheel in the box as a battle spare.

There are tire experts on this forum that suggest that a four year life is appropriate for trailer tires regardless of the mileage. Since I am based in Phoenix, heat will be the challenge and I think tire swap outs at four years is cheaper than insurance deductibles and degradation in the value of the trailer due to repairs.

I consider tires as an expense, not a capital improvement. If I have to worry about the operational costs of the trailer, perhaps I should not have acquired the trailer in the first place. This is a very expensive "hobby" or "leisure" activity.
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Old 12-11-2013, 08:34 AM   #22
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The choices are limited I believe but they are out there. Carefully check the load ratings and if they give you the safety margins for your 25' trailer they would be a great choice. For the 30'er I think that you will find the load ratings to be very close with little margins and for that heavier trailer you might need to look to the 16" where you have a greater carrying capacity with some safety margin. Do some homework and see what's available to you. I just went 16" on my 30'er and am comfortable with them.
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Old 12-11-2013, 09:19 AM   #23
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You can expect anything you want but I can virtually guarantee that within 5 years your tires will show sidewall cracking and at least one will be losing air.
5 years is a tires maximum lifespan.Any brand.After that you are on your own.The rubber brakes down and dry rot is not usually visable to the naked eye.Those tiny micro cracks on the sidewall are visible after a year on most tires.They have no effect on the tires performance or durability for the first 5 years.
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Old 12-11-2013, 12:45 PM   #24
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Originally Posted by Wingeezer View Post
I believe it depends on the load rating you need for your particular trailer GVW.

There was not a 15" LT tire that had enough capacity to use on our Classic 30 with GVW=10,000#. So I went with the 16" wheels to get the capacity I needed.

Mind you, I only looked at the Michelins, perhaps someone else makes one?

Brian.
So- I have a Classic 30 with 15" wheels, actual weight on trailer axles 7,440#, 10,000# GVW- they made it at the factory and sold it with inadequate tires/wheels? Could that ever come around to bite 'em? Hmmm...
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Old 12-11-2013, 12:48 PM   #25
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I selected the 15" Michelin LTX (P) 235/75R15 XL tires for my 25FB as there was plenty of load capacity remaining as a safety margin in that application. My model 30 Classic tiptoes across the scales at 10,000 pounds which requires a Load E 16" tire as no Load E 15" are available from Michelin.

Why so heavy? My trailer has 7,440# on the trailer axles while hitched up...
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Old 12-11-2013, 01:17 PM   #26
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Empty factory literature weight for our 2014 Classic model 30 is around 7,365 pounds without options or 54 gallons of water or our camping stuff. Based upon our experience with the 25FB, I expect the camping ready Classic 30 to weigh from 8,500 to 9,000 pounds due to the extra A/C option and an extensive solar system with at least four 100 pound batteries.

Thus the requirement for the greater carrying capacity of the 16" tires and wheels. Four GYM tires are rated 10,160 pounds capacity. The trailer has two 5,000 pound rated axles. I prefer Michelins.
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Old 12-11-2013, 01:32 PM   #27
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So 6 (Triple Axle) of the Michelin LTX (p) 235/75/R15 are adequate for my 34' with a GVWR of 9900#, while not adequate for a 31' Double Axle of the same weight? Just trying to clear the fuzzy from my head...
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Old 12-11-2013, 01:36 PM   #28
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Originally Posted by m.hony View Post
So- I have a Classic 30 with 15" wheels, actual weight on trailer axles 7,440#, 10,000# GVW- they made it at the factory and sold it with inadequate tires/wheels? Could that ever come around to bite 'em? Hmmm...
Not sure exactly what you mean. I would guess that your tires - if Marathons - are rated for the load (but only just) and the wheels should also be so-rated.

Do you know that not to be the case?




I had a strange situation with my 2005 Classic 30 that I bought used a few years ago. (about 2 years old when I bought it if I recall)

Sometime during the 2005 production year, Airsteam upped the axle rating they were using. The earlier models that year (mine included) had a GVW of something like 8700 pounds, and at some point that year, AS then went with 5000# axles on the same size trailer and raised the GVW to 10,000#.

I didn't know anything about this when I bought our trailer "used."

But one day when I was under the trailer, I noticed the number "5000" in yellow marking paint on the axle bodies. I tried to find axle serial numbers but could not.

When next at Jackson Center I asked if they would confirm what axles I had, and they said that indeed they were 5000# axles. They prepared a new spec sticker for our trailer.

However .. I then found out that my Alcoa wheels that I believe initially came with the trailer when new were rated 2200# (i.e. total of just 8800!)

I don't know if Airstream had screwed up when first releasing the trailer since they made the change during the production year, or if maybe the previous owner had afterwards fitted the heavier axles fitted but not bothered about checking the wheels.

Airstream could not assist me in sorting this out.

Anyway, I now have the Michelin LT tires with reserve load capacity, and new wheels that are rated at 3200# each so hopefully all will be well!


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