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Old 09-01-2014, 03:22 PM   #11
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Amazing...never seen that one before on an rv!


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Old 09-01-2014, 03:27 PM   #12
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Hmmm, I have to wonder exactly where the tire/rim ended up.

Of course, it may be best we don't know (see my sig line)
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Old 09-01-2014, 04:01 PM   #13
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The studs broke off sub surface! Believe it was because the studs were allowed to "work". Only root cause I believe all were somehow loose for some time.


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Old 09-15-2014, 09:59 AM   #14
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Update - Tire Brand

Quote:
Originally Posted by vinmaker View Post
OMG! That could have been a disaster. I cannot believe the single tire did not blow out due to the weight/stress. What brand were the factory tires?
The tires that have been on the trailer since purchase factory new are "Triangle" brand. I understand these to be Chinese.

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Old 09-15-2014, 10:24 AM   #15
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Quote:
Originally Posted by Char_n_Kath View Post
That, for certain, was the topic of much discussion and speculation between me and the mechanic, Rob.

Rob indicated that since there was no wear marks on the brake drum, it was his opinion that the sheer wasn't due to loose lug nuts. This made sense to me as I'm very careful about the lug nuts. Before the trip (planned as 4,000 miles), I properly torqued the lug nuts on all four wheels. This incident happened at about 1,500 miles into the trip. When the lug nuts on the other three wheels were checked, they were all still the same.

The other ideas were that the brake locked up and/or faulty lugs. If it were either of these, I can't think of any preventative measure that could be taken.

Charlie
A couple things happened in just the right sequence to cause your failure. Five lug wheel hubs are designed to function with at least four lugs properly torgued to spec. for redundant safty reasons (does not apply to four lug design).

A few assumptions here to try and explain the failure. Initial wheel install was not proper. Your checking (by torque wrench) before the trip must be done with wheel up. Proper procedure is to loosen lugs, then re-torque the wheel to spec. Improper install prior to your re-torgue had already set the failure on its path. The wheel was not seated to the hub properly causing whats called http://www.knowswhy.com/why-do-lug-nuts-loosen/this That condition continued until studs failed and wheel seperation occured. Heres the good news, no trailer damage.
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Old 09-15-2014, 05:22 PM   #16
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Quote:
Originally Posted by Still Kickin View Post
A couple things happened in just the right sequence to cause your failure. Five lug wheel hubs are designed to function with at least four lugs properly torgued to spec. for redundant safty reasons (does not apply to four lug design).

A few assumptions here to try and explain the failure. Initial wheel install was not proper. Your checking (by torque wrench) before the trip must be done with wheel up. Proper procedure is to loosen lugs, then re-torque the wheel to spec. Improper install prior to your re-torgue had already set the failure on its path. The wheel was not seated to the hub properly causing whats called http://www.knowswhy.com/why-do-lug-nuts-loosen/this That condition continued until studs failed and wheel seperation occured. Heres the good news, no trailer damage.
Thank you for the input. The mechanic who did the repair was mystified by what had happened, as he said there was no indication whatsoever on the brake drum that the wheel had rubbed against it due to loose lugs. The wheel was never off the ground since it came from the factory in August 2010. I will have to assume the lugs worked loose, for some reason, although I know I checked all lugs on all wheels prior to the trip the same as I've always done. But yes, very good news of no trailer damage - things could have been much worse.

Charlie
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