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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 hadnít 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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Nice Terry! Your Burning Man picture is way cool. No reason for the panic. Right Artstream?
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