CapriRacer
Somewhere in the US
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Chris wrote:Cool so you are saying my quote of a Barry Smith item in 2009 was Barry quoting your statement about ST tires, load intensity and non passenger aspect of ST tire ratings........
No, I am saying that if you quote Barry and you quote me, you're quoting the same guy.
Chris wrote:........So it does not appear from you recent post here that you have changed your opinion of ST tires. I look forward to reading more of what you have to say....
Thanks. I hope I don't disappoint.
Chris wrote:.......From my view it appears that ST tires are more about low cost provider than a quality product. I see a lot of trailers come into our Snowbird park with damage from these inferior tires. How it is not only ST that fail.......
I'm not sure I understand completely what you are saying, but allow me to give my opinion.
I think the failure rates of ST tires and LT tires used as trailer tires is the same - provided all other things are equal. HOWEVER, before everyone jumps on that statement, allow me to explain.
First, the population of ST tires and LT tires used on trailer is quite different. It's hard to segregate this out, but I think there are many more times as many ST tires in use than LT tires used on trailers.
My research into ST tires lead me to the standards manuals - and even as late as 2005, the standrds books had listings for AlphaNumeric sized ST tires (F78-15ST). From that I made an educated guess that ST tires were an attempt to utilize existing, but otherwise obsolete, equipment. This means that the technology might not be up to date.
Plus, I don't think there are any tire manufacturers producing ST's and LT's in the same plant - which means there could be HUGE differences, even within the same manufacturer.
Add to the fact that since the Ford/Firestone thing in August of 2000, tire manufacturers have been furiously researching how to make tires more resistant to belt failures. Obviously Passenger Car tires would be the first place this research would center on - particularly P tires on SUV's, but LT tires would be next on the agenda. I don't think ST tires would benefit as much from this type of reasearch as 1) ST tires are not usually made by the big players in the tire business. 2) The old technology would not lend itself to some of the changes.
Personally, I think LT tires are much better today than they were in 2000. I don't think I can say the same about ST tires.
Oh, and I want to point out that the word "quality" has a specific meaning to engineers - consitency from individual product to individual product. I always stumble when consumers used that term to mean "design" - so I hope you will forgive me if I forget. I also hope that anyone posting in this thread will keep this in mind. It's really important that if we're going to discuss this issue that we make a clear distinction between consistency (which would include defects) and tires that are designed a certain way.
* This post was
edited 02/06/12 01:41pm by CapriRacer *
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CapriRacer
Visit my web site: www.BarrysTireTech.com
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ExRocketScientist
Laurel, MD
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Joined: 11/11/2010
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We will keep in mind that you define quality as consistency, not necessarily designed well for a particular application. Interesting thoughts regarding the old design/obsolete equipment. Seems I have heard similar statements from Chris.
Curious though how the technology and equipment has changed. If this is propriety information that you can't answer, just say so . . . I will understand and respect that.
So I take it at some point you are going the explain some of the design differences between the ST tire and the P and LT tires (within the parameters of what you can reveal).
ERS
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Chris
Shelter Bay, Wa
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And maybe address the differences in testing standards between ST and LT tires? Chris
My Rig
2001.5 2500 STD CAB AUTO SLT 4x4, CTD 4:10's, Bomb'd to Tow
2005 Cardinal 29WBLX.
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Mile High
Denver, CO
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Joined: 02/05/2008
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You keep referring to the Firestone/Ford issue in 2000 as a big "eye opener" in the tire industry. Was this because Ford was involved and it caught a little extra spotlight? I know it wasn't the first tire issue Firestone has had that caused injury and resulted in a massive recall (circa 1978).
2006 Ford F350 4X4 SB CC SRW Powerstroke 6.0
2007 Montana 3400RL 5th - hi gloss, electric awning, remote system, Onan 5500, G614, JTs, wet bolts, Dish, Ariston W/D, 5th Airborne.
"A picture is worth a 1,000 words, but it uses up to 12,000 times the memory"
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OldGreaser
South Texas
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I have a specific question for CapriRacer if/when you wade through the others. I have an 18k GVWR trailer with three 6k axles. Which of these tires am I better off installing? (By better off I mean less likelihood of failure, or most reliable service regardless of long term cost of ownership.)
Maxxis ST235 80R16's rated at 3420 lbs
or
Michelin XPS Ribs LT245 75 R16's rated at 3042 lbs (this size has acceptable diameter; no room for LT235 85's)
Thanks if you can answer. A lot of the other discussion has been a bit vague for me.
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sirdrakejr
Las Vegas, Nevada
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I have deleted many posts. Some due to being referred to a post I already deleted. Others due to being off topic. I will be deleting ( NOT editing )from now on without comment. If you decide to just make comments that do not reference the OP's and expect it to last, you are wrong. I am trying to keep this one open for the OP since he seems to have something new to add.
Frank
2011 Palomino Maverick 1000SLLB on a 2004 Dodge Quadcab CTD Ram3500 SRW long bed equipped with Timbren springs, Stable Load bump stops, Rickson 19.5" wheels/"G" range tires and a Helwig "Big Wig" rear anti sway bar.
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sirdrakejr
Las Vegas, Nevada
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Trying to keep up with all the posts that take off on difference subjects and tires and NOT sticking tot he OP thread, I am closing this one too.
Frank
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