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Old 05-15-2013, 11:37 AM   #15
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Quote:
Originally Posted by SteveSueMac View Post
...I'm sticking with the GYMs provided with the trailer, keeping them at 65 psi, keeping cruise around 62 and will see what happens. ...
Almost 3 years ago, I replaced the original OEM ST tires shortly after we purchased our previously owned Airstream; partly for the code date on the tires, partly from the negative discussion I had been reading about the brand, and partly because I didn't know how the PO towed and stored the trailer. I went with another brand of ST tires that many here thought was better and at the same time I installed a set of pressure/temperature monitors and a set of Centramatics. The wheels were balanced and I purchased a road hazard warranty for the tires. I also maintained the pressure per recommendations and have never exceeded 65 mph while towing. The trailer sees some road miles 9 months of the year and is jacked off the ground during winter storage.

Last month after we came back from a short weekend trip I noticed an uneven wear spot on the outside tread rib on 1 tire. The tire shop said it had a belt separation and replaced the tire per the warranty. The others looked good. Then last week, on a trip to Jackson Center to have some other work done, I noticed strings sticking out of another tire when I stopped for fuel and the tread surface had a rounded appearance similar to a motorcycle tire! A dealer in the chain was only 4 miles away and within an hour I was back on the road with another replacement courtesy of the warranty. They did a closer inspection of the other 2 and saw no problems.

I've been towing travel trailers since 1981 and am no stranger to ST tires letting loose with little or no warning. I believe the pressure/temperature monitors might give some early warning, but in both of these cases, these tires were showing imminent failure without loss of air or increase in temperature. While in JC I saw the 16" aluminum wheels with the LT tires they install as an option and didn't hesitate to have them replace what I had. For now I have much more confidence in them over what I've used for years.

We should always do a "pre-flight" every time before we pull out in addition to regular pressure checks on the tires. It is also good to get in the habit of looking at the tires at every fuel stop. If one lets loose at road speed, cosmetic damage to the trailer is likely, but taking out some plumbing or electrical has been known to happen way too often.
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Old 05-15-2013, 02:02 PM   #16
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Trailer Life

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I had just responded to an email about Airstream Life and my brain just didn't shift gears. Too late to edit it now, though.

If it is any consolation, my brain, too, translated 'Trailer Life' to read 'Airstream Life'.
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Old 05-15-2013, 03:07 PM   #17
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Old 05-15-2013, 03:40 PM   #18
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I dumped the GYM's for 16" Michelin's a year ago. I just did more than 6,000 miles on my 16"era/Michelin LT's. Perfect performance in many different circumstances, wind, temps, etc. I watched my TPMS' the entire time....no issues. But, I clearly recall a campground last year with a fellow 'Streamer who had 3 (yes THREE) failures of his four GYM's on a single trip. 'Nuff said.
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Old 05-15-2013, 05:56 PM   #19
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I wonder what the author of the article would say regarding the Kumho 857 ? It is marketed by them as a trailer service tire (USA), and also a light truck tire in europe, and asia.
Must be magic....
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Old 05-16-2013, 10:33 AM   #20
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Great popcorn - needs more butter and another beverage to wash it down...

Ok - better....


Discussion is good and just like that recent commercial on TV (it's on the Internet so it must be true), I'm sure the same can be said about articles in print.

I digest posts, multiple articles, feedback from actual users - but at the end of the day it's my decision (assuming money is not a limiting factor). This process has worked on my Airstream purchases (both model and dealer) and my hitch choice (go ProPride) but I learned a hard lesson when I tried to downsize from a Super Duty to a F-150 EcoBoost (damn I love that engine) and in one week (after more research seeing that max payload sticker in the door jamb) repurchased a new Heavy Duty truck (swapping from Ford Scorpion to Ram Cummins), again due to research on the now 2013 models.

Information is power - digest and then incorporate into your decision process for at the end of the day we make our own choices.


Now back to our programming after this one more quick commercial break.

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Old 05-16-2013, 10:43 AM   #21
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My thoughts on swapping from my existing ST tires to new rims and LT tires?

Still undecided after towing thousands of miles and two other Airstreams all over the country for the past years.

Reading these posts and other articles and threads should invoke some sort of conclusion, upon my part - and help educate some other folks as well.

Thanks everyone for your participation.

Now back to our programming.
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Old 05-17-2013, 09:45 AM   #22
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[QUOTE=SteveSueMac;1299389]
" . . The author did mention the rule about taking an ST to the 65-75 mph range by increasing air pressure 10 lbs above max (so to 75 lbs) and indicated he reached out to Goodyear who agreed that was appropriate. So if 65 is too much of a limiting factor, there's an option with the STs. "
/QUOTE]

I ignored this fine print provision in my earlier post. It is such, that, only if there is adequate load reserve each wheel position, Adequate load reserve meaning only about 85-87% of stated load capability is in use when WDH is applied to a fully loaded TT.

Elsewhere (in a post by tire engineer CapriRacer) is a link to the RMA Guide; How to Weigh an RV (each and every wheel position). One must make multiple crossing of a segmented scale to get this data, and, assuming the WD hitch is adequately set, make certain of each and every wheel on the TT before any increase in speed is justified.

Heat kills tires. ST tires meet their limitations quickly.

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Old 05-17-2013, 10:34 AM   #23
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What about running P tires on a trailer. De-rated 10% or so as recommended.
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Old 05-17-2013, 12:51 PM   #24
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I used P-rated tires for years on my Airstream that had probably a 75% loading factor (ie, 25% below maximum loading limits). I never had a problem.

I've also had good luck with my present C-rated STs, which also have about a 75% loading factor. My first problem with these STs occurred just last week when I noticed a rounding of the tread on one tire after a run to Key West, about a 2500 mile trip. This rounding indicates the beginning of belt separation. However, these tires are dated mid-2005, thus turning eight years old this year. I was planning to change them out in a few months anyway. But they never left me on the road.

Ironically, on the same trip to Key West, one of the E-rated LT tires on my F250 made in December 2007 experienced a rounded-tire tread separation on the same trip to Key West, but this one did separate and lose air on the road, requiring a tire change on a busy Interstate. Thank goodness for my PressurePro, which alarmed as the tire went down, thus allowing me to pull off the road before going completely flat and perhaps coming apart.
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Old 05-18-2013, 02:11 PM   #25
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This month's issue of Trailer Life discusses travel trailer tires and the differences between ST tires and LT tires as well as some brand options.

And in this article, the author issues a resounding "NO" to the use of LT tires upon travel trailers.

June 2013 issue, " Trailer Life" - author Tom Walton...

Of course Trailer Life Magazine is going to say that, Because the maunfactures who make those JUNK Chinese RV tires that smell like uncured rubber spend big money advertising in their magazine every month.
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Old 05-18-2013, 04:38 PM   #26
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I've been thinking about making the switch to the 16" Michelins next year but have a concern about size. I have a single axle '69 and the tires it came with were some old 7.00 x 15's. It was a close fit getting them in and out. I'm now on my second set of 15" GYM's (had one blowout on a 4.5 year old tire) but really spend a lot of anxious time looking in the mirrors dreading another problem.

Do you think Michelin 16's fit in my wheel wells?
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Old 05-18-2013, 04:51 PM   #27
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"Do you think Michelin 16's fit in my wheel wells?"

If you have a new axle...possibly.

I had to deflate the 225/75/15 GYM's on our 63 22 Safari to r&r, even with a good axle. It was more width than diameter for us.

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Old 05-19-2013, 04:19 PM   #28
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16's on a single axle?

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If you have a new axle...possibly.
Axles were replace in 2003, so they should be okay.

Anyone else out there try 16's on an older single axle?
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