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Old 03-24-2006, 05:36 AM   #29
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Am I the only one that thinks it is interesting the a tire company says change your tires often?! Reminds me of my car dealer who wanted to service my tranmission at 33K when the owners manual says no sooner than 50K and 100K in most instances. The car dealer just recommends it. Hum, wonder why....

From all I have heard and read, five years is a good rule. Like all rules, there are exceptions that consider specific towing conditions.

I guess Discount tires has some trailer tires it needs to move......
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Old 03-24-2006, 06:01 AM   #30
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Quote:
Originally Posted by ticki2
Why do you feel LT tires should be replaced more frequently?
LT tires don't have the same amount of "anti-aging" compounds in them (sounds like an ad for face cream), and tend to weather check, or deteriorate, faster than ST tires, which have a higher level of those chemicals. An ST tire that is 5 years old will have some weather checking, and look like it should be replaced. An LT (or P type, also) that has sat around the same length of time, will look like, well, it has been out in the sun too long. Weather checking will be much more severe, and deeper, weakening the tire.
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Old 03-24-2006, 06:09 AM   #31
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Lightbulb No offense Paul....

Quote:
Originally Posted by luckydc
Am I the only one that thinks it is interesting the a tire company says change your tires often?! Reminds me of my car dealer who wanted to service my tranmission at 33K when the owners manual says no sooner than 50K and 100K in most instances. The car dealer just recommends it. Hum, wonder why....

From all I have heard and read, five years is a good rule. Like all rules, there are exceptions that consider specific towing conditions.

I guess Discount tires has some trailer tires it needs to move......
I disagree with your train of thought on "preventative maintainance"

I would expect my transmission to fail before 100,000 miles if I waited that long to service it....

If that is how you take care of your vehicles, I can see your reasoning it being suspicious in Discount Tire Co. just wanting to "sell tires"...

Old habits die hard, new information is just not accepted by some
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Old 03-24-2006, 06:48 AM   #32
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Interesting thread and discussion here. My experience tells me that 65 mph is a safe towing speed for my setup. I had one tire appear to be headed for failure as I did my "Preflight" inspection as it showed a bulge in the sidewall. It was replaced prior to flight. On another occasion, thankfully right after I installed my PRESSURE PRO, I had a failure on the road. The P.P. gave me immediate confirmation of a problem and allowed me to slow to a stop prior to any damage to the trailer. Examination of the tire indicated that the failure may have been due to running over an 'Alligator' cast off from an 18-wheeler. A small wire from the Gator had penetrated the cord, allowing air between the cords and up into the sidewall causing it to fail (according to the tire dealer). It was summertime and I was running with 65psi (cold) and at 70mph which may not have helped at all in this case. Ever since, I cruise at 65mph. I find myself giving a large gap between myself and the vehicle ahead so I can try to avoid the chugholes common at bridge expansion joints where the highway meets the bridge and also to avoid materials like the 'Alligators' on the highway (superslabs). Travel at 55mph seems a little extreme and dangerous if you're out on an Interstate highway, with or without flashing lights. Maybe off the main road, 55mph would be acceptable. I have a problem with folks driving well under the posted limits and hope that they would have reflective strips on their bumpers for night travel. Thanks for sharing all of your experiences and thoughts here.
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Old 03-24-2006, 07:47 AM   #33
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Drivers in the U.S. should read this link

Quote:
Originally Posted by Pschoerrn
Speed limit is my word of the day!! In Germany you can go as fast as you can on most highways, when you are in a car. BUT as soon as you have a trailer behind you are allowed to go only a max. of 49 mph or a max. of 62 mph, depending on your trailer and your TV. 62 mph is restricted to the specific Trailer-TV Combo, so other trailer or other TV then 49 mph.
All bigger Trucks (16500 lbs and up) are restricted to go only 49 mph.

And guess what - we are doing fine with it.

If you want to speed, leave your trailer at home and go a 150 mph if you want, but as soon as you have a trailer behind - slow down! Its not only safer for you, it also is for the others on the road!!

Just my 02.Cents



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We here in the U.S. are just plain stubborn and often highly resistant to change our driving habits as a result

Even when drivers in the U.K. have restrictions on vehicles towing caravans (travel trailers) that are logically based

Some Forum members will disagree with the information contained in this link.....

@ http://www.highwaycode.gov.uk/09.htm

I am content to continue puttering down the road safely at 55 m.p.h. which I might add, is above the minimum posted speed limit on Federal highways of 45 to 50 m.p.h.
I have great respect for something that has survived for longer than I have been alive, and I am not in too much of a hurry to see that it makes it thru another day!
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Old 03-24-2006, 08:30 AM   #34
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Confusion

Ok, I read the Discount Tire thing, and ran across some confusing statements. Like the following:
  • Trailer tires are designed for use on trailer axle positions only, not for the loads applied to or the traction required by drive or steering axles.
  • An "LT" designation on a trailer tire size specifies load range only. It is not designed for use on light trucks.
  • Do not mount "ST" or "LT" trailer tires on passenger cars or light trucks.
I'm ok with the first bullet.

The second bullet point just doesn't make sense. What does "LT" designation mean? I thought LT meant "Light Truck" tire. If it isn't designed to be used on a light truck, what does it mean?

Same with the second part of the third item. I understand not mounting ST tires on a passenger car or light truck, but why can't "LT" trailer tires be used on a light truck.

I think they need to define what a "LT" trailer tire is.

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Old 03-24-2006, 08:50 AM   #35
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Quote:
Originally Posted by luckydc
Am I the only one that thinks it is interesting the a tire company says change your tires often?!
Paul ... you are not alone.

Ford says to change the oil in my Powerstoke every 7,500 miles ... every dealer I've been to wants to change it at 3,000.

Blackstone (oil analysis) says I can go longer after my last sample that had 4,000 miles on it. ("With wear looking this good, you could add some miles to your oil use, if interested.")

Gee, I wonder if the dealer is just trying to sell me an oil change?
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Old 03-24-2006, 09:32 AM   #36
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Quote:
Originally Posted by overlander63
An LT (or P type, also) that has sat around the same length of time, will look like, well, it has been out in the sun too long. Weather checking will be much more severe, and deeper, weakening the tire.
I just replaced a set (LTs) last season, when I checked the manufacturing codes on the sidewalls, and learned that they were 9 years old. they looked brand new. I hadn't put alot of miles on them; don't think the PO (who told me that they were "recent") did either...both of us used the trailer for weekend trips, half a dozen times a year. not "high mileage" travelers. I've even gotten unsolicited comments from neighbors at campsites saying "new tires, eh?".
either the tires weren't as "recent" as the PO remembered, or they were sitting in some warehouse for a long time when he bought them.
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Old 03-24-2006, 10:23 AM   #37
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Jim:

I don't want to get into a argument with, but I did not say I would not service my transmission until 100K. Also, I would apprecaite your not generalizing about "We here in the U.S.." Feel free to speak for yourself but not for me.
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Old 03-24-2006, 11:25 AM   #38
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If we're going to do as other countrys do, then maybe we should start towing with Intrepids? Or are we going to just ask around until we find someone who agrees with us and then take their advice?

I also wonder about the wisdom of taking all my advice on when to change my tires from Discount Tires. After all, their primary purppose is to sell you more tires, as often as possible.

With regular maintenance I don't think blowouts are all that common. If they were an epidemic, we'd hear a lot more about it here. It seems like with 10k members we hear once or twice a year about a blowout, and usually about someone someone knows had it. I'd say whatever we're doing is working for us pretty good.

Of course, this is the kind of thing where the person sending out the warning can always say 'I told you so' when it happens, but blowouts can happen anytime from damage from road debris or other equipment failures or flaws in the individual tire, so nothing you can ever do will protect you completely.

Why don't we just agree to take whichever precautions seem reasonable to us, and let it go at that?
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Old 03-24-2006, 12:25 PM   #39
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Uh....

Quote:
Originally Posted by Stefrobrts
If we're going to do as other countrys do, then maybe we should start towing with Intrepids? Or are we going to just ask around until we find someone who agrees with us and then take their advice?

I also wonder about the wisdom of taking all my advice on when to change my tires from Discount Tires. After all, their primary purppose is to sell you more tires, as often as possible.

With regular maintenance I don't think blowouts are all that common. If they were an epidemic, we'd hear a lot more about it here. It seems like with 10k members we hear once or twice a year about a blowout, and usually about someone someone knows had it. I'd say whatever we're doing is working for us pretty good.

Of course, this is the kind of thing where the person sending out the warning can always say 'I told you so' when it happens, but blowouts can happen anytime from damage from road debris or other equipment failures or flaws in the individual tire, so nothing you can ever do will protect you completely.

Why don't we just agree to take whichever precautions seem reasonable to us, and let it go at that?
Uh.... people in other countries don't tow with Intrepids, that would be "experts" from our country. But, because towing speed limit & safe stopping information from a link I posted came from the UK it should be disregarded

Before you "question" the motivation of Discount Tire as just mere profit, you may want consider the relatively responsible position of the largest (by volume sales) tire retailer in the nation that, incidentally, offers "free replacement" coverage. Maybe the company knows a little bit more than most of us

What constitutes "regular maintainance" in your opinion? Certainly not what is professionally recommended

I am not one to say "I told you so"

"Blowouts" attributed to travel tire failure as a result of travel tire continued service past the professional recommended life of the tire are preventable

And, as a nation, WE speed down the road way too often.....

Are you old enough to remember when the national speed limit was 55 m.p.h.? If you want to try a conspiracy theory on; how about the fact that the faster we drive, the more fuel we consume & the more carbon dioxide & monoxide we produce, which lead to more greenhouse emmisions that contribute to global warming....
Discount Tire did not post a record 13 billion dollar profit from the last quarter of 2005...


But, we don't want to get into that because that is a political subject
I started this thread just to pass along professional advice along with my opinion.... If you want to challenge the professional advice I reference, perhaps it would be prudent to offer professional advice from other sources

Personal beliefs never change unless new information is received, processed, and evaluated

I, for one, try to keep my mind open......
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Old 03-24-2006, 03:16 PM   #40
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So far I haven't received any response from Discount Tire relating for further information regarding the statement that the ST tire loses 1/3 of its strength after 3 years. Obviously we would all like to understand how the term "strength" translates to issues like load limits, or other items relative to towing.

I did send the same question to Goodyear and asked an additional question again relating to the mileage design limits of the Marathon ST tires. I'll let you all know what kind of answers I get back.

Regards,

Jack
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Old 03-24-2006, 03:51 PM   #41
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Quote:
Originally Posted by Jim Jarzabek
Before you "question" the motivation of Discount Tire as just mere profit, you may want consider the relatively responsible position of the largest (by volume sales) tire retailer in the nation that, incidentally, offers "free replacement" coverage. Maybe the company knows a little bit more than most of us
I definitly don't trust any company to treat it's customers honestly and fairly just because they have some responsibility to provide good information. Their number one responsibility is to the shareholders to sell lots of tires.

I get my professional advice on how to use my tires, what tire pressures to use, and when to replace them from our local Tire Factory shop. The guys know us by name when we come in, and they want to keep us happy and accident free so we can keep buying tires from them. It is a family business and they have been supplying tires for the local farm trucks, horse trailers, and cars since before I was born. If they told me to never tow over 55, I might listen.

But then even Discount Tire isn't telling you not to drive over 55 with your trailer. They're saying the max speed for a trailer tire is 65. I assume there's even some leeway built into that number. So why would you have a problem with anyone towing at 65 and recommend they need to slow down?

I guess my main problem with this whole thing is that Discount Tire seems to be implying that trailer tires break down in a way that is completely undetectable, and you can only be safe by regularly replacing your tires - which appear to be crack free, and still have good tread left on them. It seems to me like they're trying to scare you into buying new tires more often than you need to. But that's just my opinion and it's worth exactly what you paid for it.
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Old 03-24-2006, 06:46 PM   #42
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Quote:
Originally Posted by markdoane
Ok, I read the Discount Tire thing, and ran across some confusing statements. Like the following:
  • Trailer tires are designed for use on trailer axle positions only, not for the loads applied to or the traction required by drive or steering axles.
  • An "LT" designation on a trailer tire size specifies load range only. It is not designed for use on light trucks.
  • Do not mount "ST" or "LT" trailer tires on passenger cars or light trucks.
I'm ok with the first bullet.

The second bullet point just doesn't make sense. What does "LT" designation mean? I thought LT meant "Light Truck" tire. If it isn't designed to be used on a light truck, what does it mean?

Same with the second part of the third item. I understand not mounting ST tires on a passenger car or light truck, but why can't "LT" trailer tires be used on a light truck.

I think they need to define what a "LT" trailer tire is.

"ST" stands for "Special Trailer". "LT" stands for "Light Truck". "P" stands for "Passenger".
There IS no "LT" weight rating I am aware of. "LT trailer tires are primarily for heavy duty trailers, such as equipmemnt trailers.
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