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Old 09-05-2015, 01:09 PM   #15
Rivet Master
Ravenna , Ohio
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Originally Posted by Jim A View Post
Were the rims from the time of trailer origin? They look in the photo like they have been around for awhile. Check to make sure you don't have a rim split. Had this happen long ago. Leak in the rim, tire goes done and pop! TPS systems are well worth the money I was convinced until recently that tire "blowouts" were mainly caused by running at too low a pressure. Recently I had a truck tire that was three years old (Goodyear- little tread wear and on the passenger side rear) blow out and the consensius of three different "tire experts" was that it shouldn't have happened BUT it was probably over pressured. On the other hand, I had a "tire expert" tell me Goodyear Marathons were a perfectly good tire. Go figure. On my truck tire, nobody could find any evidence of a puncture. (max pressure on the tire was listed as 80 and it was probably running at 87 ish.) Day was one of those 102F days and we were coming out of the New Mexico Mountains onto the west Texas flat land at about 65mph. By the way, the Good Sam guy that rescued us (3/4 ton truck tires are a bitch to change with the trailer connected using the provided toy jack) Checked all the tires, told us they were all too high and said the cold inflation should be about 6 lb. give or take under the max pressure rating. That normally results in the tire ending up running just at the max recommended inflation. Up to now, I've run the trailer tires at the max pressure given on the tire as the cold inflation pressure. Sort of causes a whole series of questions when you start out when it's in the 30's and you end up driving back when it's in the 90's.

I changed the trailer tires to Michelin's and went to 16 in rims a year or so ago. Truck tires will be changed over to Michelins before the late fall travel season. By the way, I have run Maxxis on two different trailers for several years with good luck. Just feel better with the Michelins
I would be careful with info from "Tire Experts". Just because someone may have driven a few hundred thousand miles on tires or mounted hundreds does not make them an expert in failure analysis.
I have never met anyone that works in a tire store that has had in-depth training in failed tire examination. This is a specialty much as a Medical Examiner is better at doing an autopsy and diagnosing what actually caused the death than even a brain surgeon. Different specialties have different skills.

Even in the design centers for large tire companies such as Bridgestone, Michelin and Goodyear there may be fewer than a dozen engineers worldwide that had their primary job responsibility of doing cut tire "autopsies".

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Old 09-05-2015, 01:23 PM   #16
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2013 27' FB Eddie Bauer
Salado , Texas
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Having pulled and RV'd now for about three decades, there are two pieces of wisdom about tires I have learned. First, always use a tire pressure monitoring system for your trailer tires (my truck has them built in). Second, use Michelins. The Eddie Bauer comes equipped with 16' "Q" rated Michelins, which is, in my opinion, optimal. Q rated trailer tires are designed for speeds up to 99 mph on a 120 degree day. Presuming you get the Michelins, consult the air pressure chart supplied by the company and do a cold inflation to the weight range you actually have on the tires.

Your tire failure was very probably due to a loss of pressure. The downside to a tire failure like the one you described is the overloading of the remaining tire on the same side. It is definitely possible to then lose the second tire, and that can be catastrophic.

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Old 09-05-2015, 01:42 PM   #17
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2006 19' Safari SE
laguna beach, ca , California
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tire question from single mom with no idea what she's doing...

All four of my tires on my 2006 safari 19' airstream are flat. I'ts been sitting for 8 years in an RV lot for storage. Now I have to move it because the RV storage company is going out of business but all my tires are flat. Im looking for a cheap temp tire that i can replace the old ones with so i can tow it to a new storage lot. the size of the tires on it now are: PDHH MLOR 0203 SIZE ST 225/75R - how many lugs does it have? does anyone know? Can I put these tires on it?

2-Pack Trailer Wheel & Tire #420 ST205/75D15 205/75 D 15" LRC 5 Hole White Spoke - 5 lugs????
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Old 09-05-2015, 02:17 PM   #18
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2014 27' FB Classic
Vicksburg , Mississippi
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12 Volt Compressor

No expertise on tires whatsoever (which is why I read all of these tire posts), but I can share my experience with 12 volt compressors. I bought a Viair 300P after much shopping and comparing. Works like a charm. But I also bought a Jegs 7.5 gal stainless steel portable air tank, and then upgraded the tank by putting a shutoff and standard coupling. Also got a 6' Goodyear pneumatic hose/connectors, and a good Milton chuck with gauge.

One of the issues with a 12 volt compressor is they tend to have short power cords to hook to the battery, so bringing the compressor to the TT tires (or back TV tires, for that matter) is a no go. I also have a AirSafe hitch that needs pressurizing, as well. That's why the portable tank comes in handy. I just fill the tank up to 100#s and I can top off a couple of the tires per tank. It also comes in handy to fill from my big compressor to top off a car or lawn mower tire without hauling out the big unit and running a lot of hose.

Good news was that all of the above is made in USA (except Viair - I couldn't find a 12 volt compressor made in USA for under $500!). And everything has performed as planned so far...

Get some good tires and keep safe!
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Old 09-05-2015, 02:31 PM   #19
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Lower Alabama , USA
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Tire Autopsy "Root Cause"

Roger (Tireman9), thanks for your replies. I hoped you would have the time to comment.

For those who are interested, here are couple of good links on the subject of tire failures. (From Roger's blog by the way).

The first link has photos that are remarkably like the photos posted by the OP of his failed tire.

RV Tire Safety: A Tire Autopsy "Root Cause" Part 1

RV Tire Safety: A Tire Autopsy "Root Cause" Part 2
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Old 09-05-2015, 02:45 PM   #20
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Have the VIAIR 450P Automatic Function Portable Compressor to carry in the Mercedes when towing the 23D International. We modified the power cable to two pin plugs and have the mating receptacle in the space behind the refrigerator that is only a few inches from the 300 amp-hour battery.
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Old 09-05-2015, 06:26 PM   #21
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Bayfield , Wisconsin
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For the manual pump I use a good quality bicycle pump with pressure indicator. It's great for just topping off and less hassle than using a 12 volt. FYI I still drag along the 12 volt for the bigger jobs.
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Old 09-05-2015, 06:56 PM   #22
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2010 30' Flying Cloud
Mocksville , North Carolina
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Originally Posted by KYAirstream View Post
Thanks for the 12v recommendation. Agreed on the LT tire and was planning to do so, but was hoping to wait until next year.

It's a Mastertrack load range D with max load of 2540lbs, so 10,160 lbs for all four and my trailer weighs a MAX of 7500lbs fully loaded with everything imaginable. This trip we were probably at about 7,000lbs. So I thought weight wise I'd be fine with these tires to hold me over until I got new rims and tires next year. For my next set I was planning on going with load range D as well, since there seems to be an adequate margin per the numbers?

Date stamp says 1314, so I assume that's the 13th week of 2014, so around March. I purchased them in July or August 2014.

I think a "1314" date code would mean it was manufactured in 2013 on the 14th week of the year (year first and then week).
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Old 09-05-2015, 07:33 PM   #23
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Thanks for the numerous replies to my post. While I'm not in a position right now to type a reply that the responses deserve, I will definitely do so Monday or Tuesday.

I did learn something else today, however, and that is that finding a replacement in a 225 75 R15 isn't easy. After about 5 calls to various tire stores this morning, I finally found a replacement at National Tire and Battery. This itself taught me that I may want to upgrade these rims (which I suspect are original) to a 16" for ease of replacement on the road in the future.
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Old 09-06-2015, 06:37 AM   #24
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Originally Posted by KYAirstream View Post
Had my first tire failure at about 55mph after being on the road for about 3 hours. My tires were installed just over a year ago and run at 60 psi (sidewall says max of 65psi). Fortunately a passing auto let me know otherwise I wouldn't have realized it until I slowed down, and no apparent damage to the trailer was done. Pics attached. Any tire experts able to tell what the cause might have been?

Also, when installing my spare I came to the conclusion that my manual pump is about worthless. I need to get one that runs on 12v, but I also like having manual pump [if it works and doesn't fall apart]. Any suggestions on a 12v and solid manual pump?

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I agree 100% with Tireman9. That looks EXACTLY like a tire would if all the air was let out of it. The tire should be examined very carefully for a cut. My experience says that there is a 90% probability that one will be found.

Why not 100%? Because 10% of the time, the cut will be in the damaged area.
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Old 09-06-2015, 06:39 AM   #25
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Originally Posted by Echelon73 View Post
I think a "1314" date code would mean it was manufactured in 2013 on the 14th week of the year (year first and then week).
Nope, backwards! It's a 2014 tire produced the 13th week.
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Old 09-06-2015, 07:02 AM   #26
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Where is the valve stem?
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Old 09-06-2015, 07:18 AM   #27
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billings , Montana
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Most tire failures is lack of air pressure, a low tire will heat up from over flexing and come apart, it doesn't matter if it is a michelin or a marathon, also running over curbs, large objects will break the marathons have 17000 miles on them and are going on a 4000 mile trip starting this week, if they stay full of air they will make it back...
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Old 09-06-2015, 07:29 AM   #28
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Arvada , Colorado
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I should add that my ViAir 90's power cable/clips do not have enough length to reach for tires from the front battery storage box. So, I carry a small, portable 12 battery that I have anyway to charge my r/c batteries.

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