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Old 05-02-2009, 08:27 PM   #1
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New flurry of ST trailer tire blowouts

Now that hot weather is approaching in the South and Southwest, I am interested in how many blowouts of D rated ST tires will occur.
Nearly all my Marathons and no name third world D rated ST tires (5 tires) have blown up in conditions of 100 plus air temp and sustained 65 mph driving. The Marathons are no better and no worse than the no names, they only cost more. The common thread is extremely hot weather and sustained 65 mph driving. Don't anyone scold me about low air pressure and high speed driving, it didn't happen in my case.
Please post on this thread if you have a blowout.
I am on my second year with Maxxis and Carlyse E rated tires on a 25 ft Safari, inflated to 80 pounds. In July, I will have a 1500 mile roadtrip in hotter than hell conditions. I will post on this thread if I hear the dreaded thump, thump.
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Old 05-02-2009, 09:57 PM   #2
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By coincidence the OEM tire rep (Goodyear, Bridgestone, Conti) was in the shop yesterday. I asked him if he had heard anything about tread seperaton in the Marathons.
His measured reply was that since he is only involved with passenger and light truck tires, and only in OEM applications, he hadn’t heard of any problem.
However, he did say make sure to keep the copy of the invoice with the DOT numbers of your tires. You need this info to check with the manufacturer if there is any recalls.
Additionally if you feel there needs to any reinbursement this can help with a claim.

Good luck,
Tom

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Old 05-02-2009, 10:28 PM   #3
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Early warning!

Hi, I'm pretty sure someone will tell you that 80 lbs in an E rated tire will beat your trailer to death. I have no experience with that so I'll let the experts chime in.
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Old 05-02-2009, 10:31 PM   #4
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I agree!
You will pound your trailer into an early death!

PLEASE, please let some air out
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Old 05-02-2009, 11:37 PM   #5
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There are already multiple threads about tire failures, specifically the conditions you are starting this thread about. Why do you want to start yet another one?
And yes, you need to reduce the pressure in your tires to load range D pressures. You are causing undue harm to your trailer with the higher pressures.
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Old 05-03-2009, 01:00 AM   #6
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Handn, I am also running Maxxis LR E tires at 80 psi, and I can see no difference in the ride. Personally, in Arizona, I'd rather run 80 psi than risk another blowout.
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Old 05-03-2009, 08:53 AM   #7
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In the interest of fairness, I promise to post if my trailer breaks apart due to 80 lb air pressure. In 6000 miles of towing some of it in Mexico on rought roads, I have noticed no difference between the D and E rated tires in the ride of the trailer or to damage inside. Cabinets pop open so I tape them shut. I carry spares for the plastic latches because they go too, but no other problems. The suspension on the Airstream trailer is well designed and the trailer is well made except for the OEM tires.
The experts who cluck about 80 lb air pressure may be the same ones that advise against Airstream use of C rated light truck tires inflated to 35 lbs. Despite the stiffer sidewall of the truck tires, I'll bet they ride smoother than D rated ST tires inflated to 65 lbs. Truck tires is where I am going if my E rated ST tires blow up.
I am starting another thread because focused attention is the only way a dangerous problem will get solved.
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Old 05-03-2009, 10:57 AM   #8
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Tires

I'd be curious to know if anyone has factored in the possibility of an old "new" tire in the blowout conversation. Anyone ever check the manufacture date of a "new" tire that has failed?

My job takes me into various auto repair/parts/tire places. It amazes me that some of the tires are fairly old and are still for sale. There was one place that I will not name (they can afford better lawyers than I) that had 7 year old name brand tires on the display rack. Both the tire brand and the retailer names would be easily recognizable to you as they were not local or regional operations but national companies.
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Old 05-03-2009, 01:08 PM   #9
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Time to retire

Here is the link to a little thread that might have some useful tire info.
Goodyear-marathon-failures

As for myself, I switched to 16 "Michelin LTX, load range D some time ago.
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Old 05-03-2009, 02:47 PM   #10
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Quote:
Originally Posted by ROBERTSUNRUS View Post
Hi, I'm pretty sure someone will tell you that 80 lbs in an E rated tire will beat your trailer to death. I have no experience with that so I'll let the experts chime in.
Agreed, but not only that, when running on hot pavement for extended time, your pressure will get even higher. Heat makes such a big difference in tire pressure, that I wouldn't be surprised if you started at 80, you would have 95lbs plus after a long hot day on the road. It's entirely possible they're getting overinflated and bursting.
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Old 05-03-2009, 03:05 PM   #11
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Tires

Here is a load/inflation chart for ST Tires.CLICK TO MAKE BIGGER TO READ
NOTE that MAX speed rating is ONLY 65 MPH.
IF you want high speed rated ST tires (120MPH)the only one I know is the "Cooper Custom Trailer Plus" at about $150 ea.
I do not understand why folks want to put 80 PSI in load range D ST tires when max is 65 PSI.Your trailer gross weight divided by your number of tires will give you your tire load and the PSI to carry that load.IE your trailer cross weight is 8000 lbs and you have 4 tires = 2000 lbs /tire.A ST225/75R15 load range C tire at 40 PSI will carry 1880 LBS ea,X 4 for a gross weight of 7520,at 45 PSI 2020 LBS ea X 4 for a gross weight of 8080 LBS and at 50 PSI would carry 2150 LBS ea MAX.X 4 for a gross weight of 8600 LBS.
If you used ST225/75R15, load range E at 80 PSI that is 2830 LBS ea X 4 would be good for a max gross weight of 11320 LBS.That would be a 3320 LBS over kill and might be a hard ride for you trailer.
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Old 05-03-2009, 03:24 PM   #12
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umm exactly which new flurry of blow outs are we talking about again?
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Old 05-03-2009, 06:04 PM   #13
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umm exactly which new flurry of blow outs are we talking about again?
The ones that haven't happened yet. this thread was created because a flurry was expected, and the person starting the thread wanted to go for maximum panic factor.
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Old 05-03-2009, 09:00 PM   #14
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... maximum panic factor. Click image for larger version

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Nice Terry! Your Burning Man picture is way cool. No reason for the panic. Right Artstream?
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Old 05-03-2009, 09:06 PM   #15
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Old 05-03-2009, 09:32 PM   #16
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I'v been using 700/R15 Sumitomo light truck tires, load D, on my single axle Safari at 60 psi.
They are now 7 years old with many thousands of miles and look like new. I'v heard all the stories about replacing them with Chineese c**p every three years, so I'll be the test to see how long tires will last. I'v had a blowout with another brand, so I know what to expect. With a single axle you know at once that the tire has gone and get stopped before it does damage.
I have changed the axle and rode inside so I know that it runs very smooth.
I'll check in at ten years to report how they are holding up.
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Old 05-03-2009, 10:04 PM   #17
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re cooper tires

I got a set of Custom Plus Trailer tires two weeks ago. Lucky me, the distributor told me they were the last set available that were made in the US. He didn't say where the new ones were comming from, just that they would not be US manufactured....
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Old 05-04-2009, 08:24 AM   #18
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Here is the link to a little thread that might have some useful tire info.
Goodyear-marathon-failures

As for myself, I switched to 16 "Michelin LTX, load range D some time ago.
I suppose you are talking about tires for you TV. Our local Michelin Man cliams they don't make tires for trailers, and is quoting me on Cooper.
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Old 05-04-2009, 08:56 AM   #19
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Quote:
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I suppose you are talking about tires for you TV. Our local Michelin Man cliams they don't make tires for trailers, and is quoting me on Cooper.
Hi Aage,

The Goodyear marathon debate has been done to death and goes back to 2006 with over 500 posts.
As you might expect, some like um, others don't, some don't no what else to do, others blame others, you get drill.

see: http://www.airforums.com/forums/f438/goodyear-marathon-failures-28293.html

I switched to 16" rims and mounted Michelin LTX load range D tires/w steel valves on my Trailer 13,000 miles ago. Many have. End of tire problems

See 15"-16" switch post.
http://www.airforums.com/forums/f438/16-tires-on-a-31-sovereign-40137.html

The are other threads on this subject you can search for also.

"ST" tires just don't cut it IMHO

Michael

PS, Mod's can we move this thread?
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Old 05-05-2009, 09:43 AM   #20
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"ST" tires just don't cut it IMHO

Michael
Michael,

Yes, I am well aware of the tire kafuffle, and I have read most of the posts.

It strikes me that some posters have made claims that, were they engineers or actual tire industry specialists, they would have to back up with facts and support documents, in order to be able to publish the information they have posted. But since we are all amateurs, unsubstantiated claims can be made.

And some of the statements and assumptions I've read seem quite strange, indeed.

So If I understand correctly, you are using light truck tires on your TT? Have you seen any documented research that makes you feel comfortable with that decision?

Not trying to be a smart*ss, but I want to be sure that I get tires that were designed for the use that I will put them to, at a decent price, and with good national support. I can't imagine that a tire blowout would occur anyplace convenient, and even with a spare, why make it hard to find a replacement?

Also, with the litigious nature of the world today, if, God forbid, I was in an accident involving my trailer where another party was injured, and it was discovered that I had used tires not designed for use on a TT, I can imagine the lawyers gleefully rubbing their hands together.

The only tire I see that I am comfortable investing in so far is the Goodyear Marathon.

It seems to me that, as it is with many parts of our TTs, maintenance is important with tires, in fact, it is critically important for tires, regardless of the make we choose. Those posts detailing users' methods for tire care are the ones I read most carefully and on which I made many notes.
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