Collateral Damage - Fiberglass RV


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Old 07-15-2012, 04:37 PM   #1
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Collateral Damage

If/when you blow a tire, look for collateral damage on your rig

Last year when we grenaded one of the Goodyear Marathon Timebombs we took out all the black plastic piping for the sewer system, putting the contents of out grey and black tanks all over the highway (and the front of the van behind us!)

When another Marathon did the usual Goodyear thing this year, it ripped off the wiring to the rear axle for the trailer brakes.

I did not know that until I was repacking bearings and adjsuting brakes - could not get the back ones to come in. Non-contact thermometer showed front axle brake temps at 125* after a stop, while rear axle brake temps were in the 88* range (Ambient temp)

Crawl under again and voila! So a little wiring fixing, and cover all the new joins with liquid electrical tape with shrink wrap over that - now all four wheels read within 10* of each other, in the 100* range, even after repeated stops.

Don't assume that the tire was the only casualty!
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Old 07-15-2012, 04:41 PM   #2
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Reduce your chances of a blowout by replacing your tires every 5 to 6 years and not under inflating them.
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Old 07-15-2012, 04:49 PM   #3
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The Badyear Marathons were about a year old. They had been put on the trailer about 8 months before I picked it up in Texas last Aug First. First grenade went off in Idaho on the way home. Second one blew up on the way to the NOG this spring.

All have now been replaced with "Les Schwab House Brands"

If I had known about them in April, I would have gotten the Kumho 857's, but, although that info was on this site, it is kept hidden more securely than the NORAD plans.

ON EDIT: I forgot to say that the Badyear grenades were always run at the max shown on the sidewall - 65 psi, but they just cannot take being driven at the speed limit!

The point is - regardless of the cause of the ka-boom, always check for any collateral damage that the shredding tire may have caused
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Old 07-15-2012, 05:22 PM   #4
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Quote:
Originally Posted by BCDave View Post
The Badyear Marathons were about a year old. They had been put on the trailer about 8 months before I picked it up in Texas last Aug First. First grenade went off in Idaho on the way home. Second one blew up on the way to the NOG this spring.

All have now been replaced with "Les Schwab House Brands"

If I had known about them in April, I would have gotten the Kumho 857's, but, although that info was on this site, it is kept hidden more securely than the NORAD plans.

ON EDIT: I forgot to say that the Badyear grenades were always run at the max shown on the sidewall - 65 psi, but they just cannot take being driven at the speed limit!

The point is - regardless of the cause of the ka-boom, always check for any collateral damage that the shredding tire may have caused

The better point is to NOT, I REPEAT NOT, exceed manufacture's specifications. Goodyear clearly states maximum speed 65mph.
I have a big problem with incomplete information and bad mouthing a company when specifications are ignored then something bad happens. Fess up to exceeding manufacture's specifications when something happens instead of leading people astray.
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Old 07-15-2012, 06:58 PM   #5
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In addition to the tire speed rating and the tug tow wgt. limit, there's also the tug manuf.'s towing speed limit. So there I am ten mph over the tug maker's speed limit and 10 under the average interstate limit in the CONUS. I've learned to maintain the double nickel whether I like it or not; the rest of em can do their own damn driving. As my daddy said, hell ain't even half full, so if they get there first, so much the better!

jack
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Old 07-15-2012, 07:36 PM   #6
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Once again - we are WAY off topic! The topic is: When you have a flat tire, check for what else it took out!

Some folks may go all their lives sans a blowout, some will get one or more every year (or every trip!). That's not the point. The point is - when it happens, don't just change the tire and assume that everything is now perfect!

The fact that I personally refuse to accept substandard equipment as being "normal" has nothing to do with the topic!
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Old 07-15-2012, 09:06 PM   #7
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Had you wanted to stay on topic making libelous comments about Goodyear is a poor way to start.
I use those tires and run above the speed rating problem free.
I may change on the next set and go with the Kumho 857's

I run at 50 psi not wanting to exceed what pressure the wheel is rated at.
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Old 07-15-2012, 09:35 PM   #8
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Apologies to those who have already read the deleted portion of this comment... After some reflection I saw the futility of the premise.

Oh well, I only suggest that we should go ahead and educate ourselves by hearing all sides, then trust in the readers ability to make up their own minds in the process of separating the wheat from the chaff. (It actually works pretty well)
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Old 07-15-2012, 09:38 PM   #9
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logic

Am I to understand you correctly that if I inflate any trailer tire to spec and drive at the tires rated speed a tire blow out is impossible? That defies the rules of logic.You are presuming that anyone who has a tire failure is always the cause of the failure by under inflating the tire or exceeding the speed rating of the tire. I find that hard to believe . I know of no manufacturer who has achieved zero defects across their whole product line , even when they are ISO compliant. Products are defective by design or by manufacturing procedure all the time
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Old 07-15-2012, 09:50 PM   #10
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Quote:
Originally Posted by steve dunham View Post
Am I to understand you correctly that if I inflate any trailer tire to spec and drive at the tires rated speed a tire blow out is impossible? That defies the rules of logic.You are presuming that anyone who has a tire failure is always the cause of the failure by under inflating the tire or exceeding the speed rating of the tire. I find that hard to believe . I know of no manufacturer who has achieved zero defects across their whole product line , even when they are ISO compliant. Products are defective by design or by manufacturing procedure all the time
Makes sense to me!
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Old 07-15-2012, 10:10 PM   #11
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"Products are defective by design or by manufacturing procedure all the time."

This statement may very well be proof of Floyd's contention that wading thru the anecdotal and circumstantial is a satisfactory way to deal with internet advice and recs. Let's say poor old Goodyear's blowout problem were design or manuf. defect dependent. If the defect was corrected or the design changed, the performance and longevity of Marathon trailer tires might improve. And might go south again at some future date. Presumably Kumho or Maxxis could experience the same cycle. So let's hope there are up cycles as well as down and that the chronology of what folks are telling us matches their own recent experience and not what they heard ten yrs. ago.

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Old 07-15-2012, 10:22 PM   #12
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Feedom of speech.......

Thank you Dave for the advice on the tires and reminding us to always check for any collateral damage that the shredding tire/tires may have caused. That advice could very well save lives.
Also.....
Dave's advice was no different than picking between Ford & Chevy. I know that by reading everyones preferences on here, it really helps me in my research for the best products. Will I be careful in choosing the right tires after reading this post, you betcha!
Have a great Monday everyone!
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Old 07-15-2012, 10:23 PM   #13
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Originally Posted by Byron Kinnaman View Post
The better point is to NOT, I REPEAT NOT, exceed manufacture's specifications. Goodyear clearly states maximum speed 65mph.
I have a big problem with incomplete information and bad mouthing a company when specifications are ignored then something bad happens. Fess up to exceeding manufacture's specifications when something happens instead of leading people astray.
Goodyear actually states on their website that you can run Marathons at up to 75 mph if you inflate them to 10 psi over the max stated on the sidewall.
However they do state that you still must stay within the tires load rating as far as weight, and must also of course stay within the psi rating of the wheel which is stated by the wheel manufacturer.
You can search the goodyear site to find this info if you want to read it. Somewhere here, I may have saved the link, but I'd have to dig for it.

And to Dave's point, for sure, we need to look closely under the trailer anytime a tire comes apart. More than one RV has had things like propane lines destroyed by the the shrapnel of a disintegrating tire. Some folks like to drive down the road with their propane on so they can run their fridge.....that would be scary to be dumping the contents of the propane tank as you come to a halt with smoking hot tire debris ! I choose the 'chicken' route on that......I always have the propane valves closed while rolling. But that is going off topic....

george
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Old 07-15-2012, 10:28 PM   #14
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Quote:
Originally Posted by steve dunham View Post
Am I to understand you correctly that if I inflate any trailer tire to spec and drive at the tires rated speed a tire blow out is impossible? That defies the rules of logic.You are presuming that anyone who has a tire failure is always the cause of the failure by under inflating the tire or exceeding the speed rating of the tire. I find that hard to believe . I know of no manufacturer who has achieved zero defects across their whole product line , even when they are ISO compliant. Products are defective by design or by manufacturing procedure all the time
I agree that zero defects is an almost impossible to attain. However the odds of failure are greatly increased when specifications are ignored as was the case here.

People get struck by lightning in own home, rare but it happens. The rules of say that there is no such thing as impossible. So if you assumed that's what I was saying you're wrong.
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