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Old 11-17-2013, 02:33 PM   #155
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Never had a problem with the GYMs but after doing some research realized we have been lucky. We travel too far from home, too often. Even with TPMS the damage can be done before we are able to stop. Got the 16" Michelins and don't worry about trailer tires anymore.
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Old 11-17-2013, 03:12 PM   #156
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We also had not had any problems with our GYM's. They were 1 year old when we got the trailer so now going on 4 yrs. I decided to make the switch to 16's and when I removed the GYM's ( tread like new ) one was on the verge of failure so we were on borrowed time and got lucky this past summer. I put 3 of them on my son's flatbed trailer. Hope they have a few miles left on them on a much lighter trailer.
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Old 11-17-2013, 08:57 PM   #157
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Just installed 16 inch Michelin's on Sendel wheels today. Still plenty of room fore/aft and between wheels. Dill TMPS display in TV works great (PSI/Temp). Necessary - maybe, Insurance - certainly. Thanks for thoughtful insight both pro and con with this continuous modification.
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Old 11-17-2013, 09:30 PM   #158
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I haven't messed with the TPMS yet but I purchased a Tire Tracker system. I looked at it in Feb. at the Sarasota Rally. Hopefully it will work well. At last I have metal valve stems. Thanks to many of you I knew to ask for them.

As for the question about switching to 16"- in my case, I had no prior issues but was running Towmax tires with about 4500 miles on them. The supposed blowout window is 5-7K miles for the majority of 15" ST tires so although mine were only about 1.5 years old, I decided to prepare for the upgrade a little early in an effort to avoid potential issues. My spare was an early '04 age-wise GYM and 15" the original tires were a bulging mess when I went to purchase the trailer and had to be replaced immediately.
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Old 11-17-2013, 10:30 PM   #159
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While not on AS, I can report satisfactory experience w/GYM'S. 4000#plus boat/single axle trailer, new in 2007, ran GYMs to the wear bars, need to replace next year. Brought used 28' toyhauler a few years ago that had what appeared to be original GYM on it. Put over 15000 Miles on them with 1 flat from sharp rock. Having said that the EB has the std. 16" setup and have 6000 miles so far.
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Old 11-18-2013, 12:04 PM   #160
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Quote:
Originally Posted by switz View Post
For my $0.02 (well, actually $199.00), adding a set of Centramatic wheel balancers in addition to a proper spinning wheel balance job on each tire and wheel adds additional piece of mind to going to the 16" Michelin MS/2 tires and 16" SenDel wheels. Putting the Dill TPMS is icing on the cake for me. I think (after awakening from a stupor caused by reading all the tire threads ) that doing all this covers all the bases I have read about in the tire forums.
You did PRECISELY what I did! I bought the all-aluminum (no black) wheels plus the Centramatics, the Kumho E-rated LT tires, and the TPMS by Eezrvproducts (EBay). I'm tickled pink with the outcome. I can DEFINITELY tell the BIG difference with the balance while towing - smooth as silk!

At the tire shop they folks there didn't give me the slightest grief about my LT tires or balancing the SENDEL wheels. I even brought the wheels in their original boxes. I made a point of insisting the balance weights not show on the front.

Honestly, if the tire shop had given me any grief about my setup, I would have taken my business elsewhere.
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Old 12-08-2013, 02:14 PM   #161
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Wow, my eyes are blurry! 12 pages of reading this tread but I'm sold. I just ordered a set of 16" SenDel T02's on Ebay $460 and a set of 225-75R/16 LTX M/S2's from Tire Rack $912.

We just picked up a new to us 2006 25FB with 3 different types of tires on it! The two GYM's that are still on it have a lot of sidewall dry rot and are probably from 2006. All of the 15" rims have corrosion, two are severely damaged and curbed so it just seems like the best fix it to replace everything at once and be done with it!

Now I need to find a new bed!
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Old 12-10-2013, 08:19 PM   #162
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I ordered a new mattress from these guys:

RV Mattress | Custom Size Mattresses for RV & Campers

Airstream sent me the specs sheet, I forwarded it to them (it's a radius bed) and they made it and sent it to me.
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Old 12-11-2013, 07:15 AM   #163
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When picking up the new 25FB, I attempted to sleep on the factory mattress at the dealership lot and knew that it had to go.

Using Airstream supplied drawings, Rocky Mountain Mattress made a queen mattress for the 25FB and are making twin mattresses for the Classic 30. We selected the 8" thick model so it was level with the side table in the 25FB and filled the Airstream custom 600 thread sheets and mattress pad properly.

The Sunrise? 8" Memory Foam Mattress with Bayer Technology

They have promotions with discounts on price and free shipping.

We slept very well on their mattress.
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Old 12-11-2013, 07:55 AM   #164
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What is the reason for switching to 16" wheels? Can't we buy 15" LT tires?
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Old 12-12-2013, 10:17 AM   #165
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I will only purchase Michelin tires as I have not had a tire failure in over 48 years of use on trucks and cars and trailers.

Michelin does not currently make a true 15" LT tire. The Michelin LTX (P) 235/75R15 XL tire is an extra load tire but is called a passenger car tire (thus the "P" in the designation).

Per 49 CFR 571.110

Tire selection and rims and motor home/recreation vehicle trailer load carrying capacity information for motor vehicles with a GVWR of 4,536 kilograms (10,000 pounds) or less.

S4.2.2.1
Except as provided in S4.2.2.2, the sum of the maximum load ratings of the tires fitted to an axle shall not be less than the GAWR of the axle system as specified on the vehicle's certification label required by 49 CFR part 567. If the certification label shows more than one GAWR for the axle system, the sum shall be not less than the GAWR corresponding to the size designation of the tires fitted to the axle.

S4.2.2.2
When passenger car tires are installed on an MPV, truck, bus, or trailer, each tire's load rating is reduced by dividing it by 1.10 before determining, under S4.2.2.1, the sum of the maximum load ratings of the tires fitted to an axle.

S4.2.2.3
(a) For vehicles, except trailers with no designated seating positions, equipped with passenger car tires, the vehicle normal load on the tire shall be no greater than 94 percent of the derated load rating at the vehicle manufacturer's recommended cold inflation pressure for that tire.

(b) For vehicles, except trailers with no designated seating positions, equipped with LT tires, the vehicle normal load on the tire shall be no greater than 94 percent of the load rating at the vehicle manufacturer's recommended cold inflation pressure for that tire.

the side wall weight rating of 2,183 pounds (that number is on the tires I purchased and installed in January 2013) must be derated 10% to 1,985 pounds. Four tires could support 7,940 pounds.

Since my Classic model 30 31' trailer has an literature empty weight of 7,365 pounds and a literature tongue weight of 773 pounds, that means the axles are supporting 6,592 pounds new and empty. Camping ready, our 25FB had about 1,295 pounds of gear. All of that plus an additional 400 pounds of batteries, 25 gallons more water, a second A/C and 50 amp service and probably six solar panels with controller means that we are adding about 2,000 pounds to the trailer weight.

That means that the trailer weight could be around 9,365 pounds loaded and subtracting a 1,200 pound tongue weight (number from the 25FB) would mean the axles are supporting 8,165 pounds and that exceeds the load rating of the 15" Michelins. Even if the axle weight was 500 pounds lighter, I do not want no reserve capacity on the tires.

Thus my decision to purchase 16" wheels and tires which have a no derated load capacity of 10,720 pounds.
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Old 01-01-2014, 08:02 PM   #166
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Phoenix, I paid I believe $310 for the twin; however, I upgraded the foam. I sent them the specs that Airstream sent me.
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Old 01-02-2014, 09:56 AM   #167
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I am sitting in the Airstream lounge at Jackson Center to see our trailer that started 20 December. I drove on snow and ice getting here with 6" expected before the day is over. I plan to be here daily to see and film the progress until it is completed.

Coming in the door of the Airstream Service center, the disk brake conversion is still on display along with a mounted 16" Michelin LT 225/75R16 LTX M/S2 on a SenDel T03-66655T wheel. Seems they are still recommending that specific wheel and tire.

I still believe that using the tire and wheel the factory recommends will be advantageous if there is ever a suspension warranty issue.
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Old 01-02-2014, 11:43 AM   #168
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Quote:
Originally Posted by switz View Post
I am sitting in the Airstream lounge at Jackson Center to see our trailer that started 20 December. I drove on snow and ice getting here with 6" expected before the day is over. I plan to be here daily to see and film the progress until it is completed.

Coming in the door of the Airstream Service center, the disk brake conversion is still on display along with a mounted 16" Michelin LT 225/75R16 LTX M/S2 on a SenDel T03-66655T wheel. Seems they are still recommending that specific wheel and tire.

I still believe that using the tire and wheel the factory recommends will be advantageous if there is ever a suspension warranty issue.
That was a long drive. Where are you taking delivery of your new rig? Did you bring the new wheels and tires with you?
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