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Old 08-30-2014, 11:32 PM   #57
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I don't worry about the operating costs of the things we enjoy, but we don't throw money away either.
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Old 08-30-2014, 11:42 PM   #58
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My set of 15" Michelin 15" Lt tires showed significant surface cracking after five years. If I had been using the trailer the last nine months I would have replaced them earlier. I fully expect to replace the p235 XL's that I replaced them with after 4 years. Cost of the that set installed and balanced was $850. I think GYM's would have been $550 or so. So it costs less than $100 a year difference. I consider that a fair investment for the peace of mind that it gives me to have what I consider to be better tires on the trailer. My tire guy did not complain about ordering and installing the XL Michelins. All he said was "that's some good rubber there." He is a Goodyear shop.
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Old 08-31-2014, 12:02 AM   #59
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2005 19' Safari
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Tire history for our single-axle Bambi:

April 2005 -- Purchased Bambi new, with three Goodyear Marathons (GYM) installed.

July 2008 -- One GYM failed due to blowout and tread separation. When replacing the first GYM, discovered that the second GYM had failed at the same time due to radial belt creep (tread still intact, but steel belt created bulge and squiggle in tread).

July 2008 -- Purchased one Carlisle ST tire for $185 (included mounting & balancing). Installed GYM (spare tire) and Carlisle on the ground, used defective GYM #2 as spare, and continued on roadtrip. -- Cumulative total for tire expenses = $185.

October 2008 -- Purchased two Maxxis ST tires for $390 (included mounting & balancing). Discarded two defective GYMs, and moved Carlisle ST tire to spare. -- Cumulative total for tire expenses = $575.

January 2011 -- One Maxxis ST tire failed due to radial belt creep; tread remained intact.

January 2011 -- Purchased two Michelin XPS Rib LT tires and 16" wheels. Total for XPS Ribs and new wheels = $1,000 - $150 credit for failed Maxxis tire. 16" XPS Ribs installed on the ground, and 15" Carlisle ST tire retained as spare. Purchased one extra 16" wheel for $110 to use later for spare tire; currently unused, in box. Cumulative total for tire (and wheel) expense = $1,685.

So far, I have bought five new tires to replace three that had failed. Specifically, two of three GYM ST tires failed (age three years), one of two Maxxis ST tires failed (age two years), and none of two XPS Rib LT tires failed (currently 3.5 years old).

So, in the first six years, I spent $1,685 on tires and wheels for my single axle, 19' Bambi. However, I estimate that I will only spend approximately $650 in the next 6-7 years; a significant savings, attributable to switching from various brands of ST tires to Michelin XPS Ribs.

I plan to run the XPS Ribs until age 6-7 years, then inspect them frequently until weather checking and dry rot makes them unsafe for continued use. At that time, the better of the two XPS Ribs will become the new spare, replacing the Carlisle ST tire with a used, 16", XPS Rib, LT tire.

I fully expect to replace the XPS Ribs with most of the rubber remaining on the tread; and I consider the expense of two new XPS Ribs (estimated at $650, including tax, mounting and balancing) to be well spent for 6-7 more years of trouble-free roadtrips.

In this case, having a single axle Airstream is an advantage, since I only need to buy two tires when the old ones wear or age out. And, it's worth $100 per year to run the best tires available (for the desert southwest).
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Old 08-31-2014, 01:10 AM   #60
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Hi from AZ. . .I have 2 AS trailers, the '05 had new GYMs on it when I bought it in '10 and we have done over 15k miles (from ATL cross country 3 times, etc) with out a single problem or failure. The '10 has GYMs also, & almost as many miles (thru the West mostly), again without a single problem or failure. No opinion or statistics here, just those facts. I have observed this debate for several years now & it just never seems to go away. Guess I'm going to have to buy tires for both soon, so we'll see what I end up with. Wish me luck ! regards, Craig
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Old 08-31-2014, 04:55 AM   #61
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I've been following this thread for a long time. First thing is don't even try to compare passenger tires to LT tires. You only put passenger tires on a small utility trailer and even that may be a push. I recently put Yokohama Geolander LT load range C tires on my van. They were the only 15" LT load range C tires with a highway tread available in this country. Turns out they are also M&S rated which is a plus (I'd expected "all season"). They are the best tires I've had for years; ever since Les Schwab went down hill and kept putting passenger rated tires on a 5000# vehicle and warranty replacing them on a regular basis.

If I keep the stock 15" rims on my Argosy I'll use the same tires. But the writing is on the wall and since the rims really need replacement I'm most likely to go to a 16" aftermarket rim. The Yokohamas will be high on my list of replacement tires. As will BF Goodrich. ST tires... no. I've watched them on U-Haul rentals (and other rentals). They must get them cheap. I'll only rent a tandem axle trailer as typically 1 out of 4 will be defective (i.e. bulge in the sidewall).
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Old 08-31-2014, 06:19 AM   #62
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Originally Posted by r carl View Post
You should be comparing a ST 225-75-15 LRC to a Michelin LTX M/S2 235-75-15 which I think is a LRC. (6ply rated) This is what most here change to.
But that is an upgrade in several ways. To make a valid comparison, everything has to be the same except for the things that are inherent in the difference between P type tires and ST type tires - which is the question I was responding to.
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Old 09-01-2014, 04:34 PM   #63
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Originally Posted by CapriRacer View Post
But that is an upgrade in several ways. To make a valid comparison, everything has to be the same except for the things that are inherent in the difference between P type tires and ST type tires - which is the question I was responding to.
You are correct that there is essentially no comparison to be made between ST tires and P rated radials; at least as far as use on an Airstream is concerned. You simply cannot find a P rated tire with enough load capacity to replace even a load range C tire. That's largely because of lower inflation pressure and no bonus allowance for running higher pressures. FWIW, on another forum a poster pointed out that according to an article on TireRack.com you have to decrease the load range of a P rated tire by 10% when used for trailer use. The only scenario where I can see using a P rated tire on a trailer is with something like a 4x8 utility trailer that's got 12" tires.

That's why people keep pointing out that the only valid comparison is an LT tire vs ST tire. And you can get load range C LT tires in a 15" rim size so the comparison is apples to rotten tomatos
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Old 09-02-2014, 09:13 AM   #64
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Lots of info offered, and many opinions but still confused and in need of tires. Replacing all 6 tow masters st that are 4 yrs old on my 34ft. Unfortunately have not had much use which is part of the problem. Crackling and crazing noted on 2 so feel it best to replace all. No problems till now and a great ride but always open to newer technology and others experience. Will continue to reach out for info. and then just choose one. Thank you for putting it all out there.Not able to change myself and many tire places unable to accommodate the length so also looking for suggestions. Thanks in advance.
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Old 09-02-2014, 09:45 AM   #65
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Originally Posted by jleric View Post
Lots of info offered, and many opinions but still confused and in need of tires. Replacing all 6 tow masters st that are 4 yrs old on my 34ft. Unfortunately have not had much use which is part of the problem. Crackling and crazing noted on 2 so feel it best to replace all. No problems till now and a great ride but always open to newer technology and others experience. Will continue to reach out for info. and then just choose one. Thank you for putting it all out there.Not able to change myself and many tire places unable to accommodate the length so also looking for suggestions. Thanks in advance.

Looks like you have Discount Tire stores on Lakeland and Winterhaven. It's difficult to beat their prices. Some have lots of space, others are located in more confined spaces.


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Old 09-02-2014, 10:10 AM   #66
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camping season must be winding down...
waiting for the "Airstream's need a soft ride" thread

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