Michelin LT failure

Me Again wrote:

Tireman9 wrote:

I will be doing an autopsy on it and the results will be my blog post for this week. Take a look this weekend and see if you follow the logic trail and if you agree with my findings.

So this is what the 8 - 14.5 tire looked like before it failed. What was it on? I believe that is the size used on Mobile Homes for delivery and set up. They are not intended to be long life cycle tires. Yet people buy the axles, rims and tires, and put them to other uses. If you look behind the cab of the trucks that deliver Mobile Homes they have a whole rack of spare tires. One also can see them on the side of the road a lot with failed tires. The wheels these tires go on have special hubs patterns to help prevent their re-entry into other services after the delivery of the mobile home! I believe that there is a Federal Motor Vehicle Safety Standards ruling that these can not be used in other highway service! MHT tires are not DOT certified tires, right? Mobile Homes are not license vehicles and do not have two have DOT certified tires for delivery??

Not sure how this one relates to 5th wheel trailers? Tireman9 reply....The tire size may not fit your 5th-wheel but the inspection process applies to tires in general.



http://www.kenjones.com/Scripts/itemdetail.aspx?t=90505&IK=DS6310 Anyone else never heard of Deestone tires before.

"Deestone Tires offer some of the most affordable specialty tires on the market, all with a standard of quality that is comparable to many more-costly brands. If you’re looking for a replacement tire for your golf cart or lawnmower that won’t break the bank, Deestone is right for you."
http://www.tiresusa.com/deestone-tires

Kenda, Duro, Deestone and others, all seem to be of the same ink! Started with bicycle tires and then spread their wings.

Do you sometimes include a finding that "the tire was just not up to the service it was subjected to!"??

Chris

Chris. I interpret that all tires intended for highway use carry the DOT symbol, which the subject tire did. There are regulations
49 CFR 571.120 - "Tire selection and rims and motor home/recreation vehicle trailer load carrying capacity information for motor vehicles with a GVWR of more than 4,536 kilograms (10,000 pounds)"
"(c) The symbol DOT, constituting a certification by the manufacturer of the rim that the rim complies with all applicable motor vehicle safety standards."

and
49 CFR 571.119 - Standard No. 119; New pneumatic tires for motor vehicles with a GVWR of more than 4,536 kilograms (10,000 pounds) and motorcycles.
a) The symbol DOT, which shall constitute a certification that the tire conforms to applicable Federal motor vehicle safety standards. This symbol may be marked on only one sidewall.

So one of the above covers this type tire.


Yes I have found tires "not up to the service they were subjected to" but those usually were highway tires used in off road gravel service where there was a lot of tread cutting to and through the steel belts. This tire was rated for 2835# at 100psi but in my experience melted body cord is consistent with low inflation, high load & highway speed. All three conditions are needed to get the conditions observed in the tire.
Did you read my posts of February 19, 2013, or July 22, 2012 which was of a TT and has very similar conditions in the tire. The fact that the Airstream is not a 5th wheel does not invalidate the findings.