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Broken Cord on Michelin Tire
09-10-2008, 13:00
Post: #22
Broken Cord on Michelin Tire
David
Enjoy Los Wages and watch your dollars. Lots of people think they can beat the house, that will never happened. That is way they can afford to castles using your dollars and mine.
Have a nice trip back home.
Best regards,
Hisham and Sue Amaral
97 WLWB 43
W. Bloomfield MI

--- On Wed, 9/10/08, David Brady wrote:
From: David Brady
Subject: Re: [WanderlodgeForum] Re: Broken Cord on Michelin Tire
To: WanderlodgeForum@yahoogroups.com
Date: Wednesday, September 10, 2008, 1:42 PM


Thanks Hisham,
That's great information. We're still working our way back home; currently in Las Vegas. Gonna
be 95deg F today, better get the sweaters. Glad you had a great trip and hope to meet up one
of these days.
Best,
David, Suzana, and Danny
'02 LXi, NV
Hisham Amaral wrote:
> David
> > I found this link to be very good at answering some of the question I > had about truck tires. I would like to share it with the group. Please > discard if it is an information overload.
> Hope that your trip to the West Coast was good and enjoyable, our was > the best ever. We will meet at one of the riles some day soon.
> > http://www.goodyear .com/truck/ pdf/radialretser v/Retread_ All_V.pdf > <http://www.goodyear.com/truck/pdf/radial...All_V.pdf>
> > Hisham & Sue Amaral
> 97 WLWB 43
> W. Bloomfield, MI
>
> --- On *Tue, 9/9/08, David Brady //* wrote:
>
> From: David Brady
> Subject: Re: [WanderlodgeForum] Re: Broken Cord on Michelin Tire
> To: WanderlodgeForum@ yahoogroups. com
> Date: Tuesday, September 9, 2008, 1:39 PM
>
> Thanks Neil, that helps a great deal. Glad to see you here
> on this list. Just a couple of questions:
>
> 1) can I measure "deflection" ?
> 2) does "deflection" change as the tire rotates at speed?
> 3) sounds like the sole purpose of tire pressure is to maintain
> the correct deflection?
> 4) if I were able to dynamically adjust runtime tire pressures,
> would optimum tire life/performance be achieved by maintaining
> the correct deflection under all ambient operating conditions?
>
> Thanks,
> David Brady
> '02 LXi, LV
>
> Neil & Pat wrote:
> >
> > * Hi Pete, David, Greg, Randy and all else who have been
following > > this thread. * You called for a tire engineer to make input into
this > > subject; well I have been doing that for 36 years now and also
happen > > to own and operate a Wanderlodge (PT-36 ) for the past 12 years
and > > have written extensively on the subject of RV safety in my book
on the > > subject as well as respond to many of the tire questions posed on
this > > and other forums. Perhaps I can help.
> >
> > The original question was re: a broken belt (actually shifted) on
a > > Michelin tire with the thought was this a problem on the Michelin
> > tires and would it be subject to warranty. At 27k miles the tire > > problem in question is almost certainly the result of a “road
hazard” > > either a rock, shoulder drop off, hitting a curb or possibly even
> > improper usage of “chocks” for leveling or other purposes.
Had it been
>
> > a manufacturing problem it would have shown up much before that
time. > > You did receive proper advice in that this is not a warrantable > > condition by the manufacturer but often dealers do provide
“road > > hazard” protection as a service to their customers.
> >
> > This is one of the major differences between truck tires and
those > > used on automobiles; in order to carry heavy loads much higher > > pressures are used and the tire is normally operated at a lower > > deflection rating. On trucks the deflection of the sidewall when > > normally inflated is on average 8% by design when it is properly > > inflated for the load carried, in contrast on an automobile tire
the > > deflection is approximately 12%, thus, yielding a smoother ride
and a > > tire less susceptible to impact loads as mentioned above. For
your > > interest aviation tires actually operate at 32% deflection to
carry > > the immense loads involved but do so with a duty cycle limited to
a > > few seconds. The “hoop strength” of the belt package” is
under
> immense > > tension from the inflation of the tire becoming more and more
rigid > > and unyielding as pressure goes up making the tire much more
critical > > to this type of abuse. So for our RVs we have a quandary, RVs are
the > > only vehicles on the road, which operate at 100% of the
capability > > 100% of the time making their safe operation somewhat precarious.
We > > must carry the correct (high) amount of air pressure to carry the
load > > (at the correct deflection rate) but should not exceed that
pressure > > or operate below the required amount. Higher pressure than
required > > will yield decreased steering power, braking power, higher impact
type > > damage as well as decrease life; too low a pressure will result
in > > over deflection, hotter running temperatures (possibly
destructive) , > > poor handling, greatly reduced life and the potential for
catastrophic > > premature failure. Take your pick, but none of these options are
very > > appealing to me.
> >
> > The above realities of life is the reason why the tire
manufacturers, > > the RVSEF and myself all repeatedly attend and lecture at rallies
and > > anywhere RVers gather to spread the word that RVs are different
and > > incur considerably more operator responsibilities from the > > owner/operators. It is absolutely essential that you have your RV
> > weighed properly wheel by wheel to assure that none are
overloaded and > > then and only then determine the correct pressure for your
specific RV > > under the conditions you operate it. Plain and simple there is no
> > other way.
> >
> > Always happy to be of assistance:
> >
> > */ Neil LeKander /*
> >
> > */ Author, The Rver’s Ultimate Survial Guide /*
> >
> > */ http://www.rvsafetyinfo. com /*
> >
> > less likely to crush to the wheel rim, possibly protecting the
tire
> > from pinching damage, but the high pressure would also place the
tire
> > under tension pressure ... so???
> >
> > Any tire engineers out there?
> >
> > Pete Masterson
> >
> > > > ------------ --------- --------- --------- --------- ---------
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> 7:05 PM
> > >
>
>
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> ------------ --------- --------- ------
>
> Yahoo! Groups Links
>
>
>
> >
> > ------------------------------------------------------------------------
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Messages In This Thread
Broken Cord on Michelin Tire - Randy Merrill - 09-07-2008, 05:05
Broken Cord on Michelin Tire - Gary Smith - 09-07-2008, 05:35
Broken Cord on Michelin Tire - Ross - 09-07-2008, 05:47
Broken Cord on Michelin Tire - Ross - 09-08-2008, 02:35
Broken Cord on Michelin Tire - Gregory OConnor - 09-08-2008, 04:21
Broken Cord on Michelin Tire - Pete Masterson - 09-08-2008, 04:40
Broken Cord on Michelin Tire - bubblerboy64 - 09-08-2008, 04:57
Broken Cord on Michelin Tire - David Brady - 09-08-2008, 05:26
Broken Cord on Michelin Tire - bubblerboy64 - 09-08-2008, 05:56
Broken Cord on Michelin Tire - Ross MacKillop - 09-08-2008, 06:07
Broken Cord on Michelin Tire - Pete Masterson - 09-08-2008, 06:31
Broken Cord on Michelin Tire - Pete Masterson - 09-08-2008, 06:34
Broken Cord on Michelin Tire - Gregory OConnor - 09-08-2008, 16:09
Broken Cord on Michelin Tire - David Brady - 09-08-2008, 16:36
Broken Cord on Michelin Tire - Neil & Pat - 09-09-2008, 04:37
Broken Cord on Michelin Tire - Henry Jay Hannigan - 09-09-2008, 04:54
Broken Cord on Michelin Tire - David Brady - 09-09-2008, 05:39
Broken Cord on Michelin Tire - Neil & Pat - 09-09-2008, 13:48
Broken Cord on Michelin Tire - Hisham Amaral - 09-09-2008, 13:48
Broken Cord on Michelin Tire - David Brady - 09-10-2008, 05:42
Broken Cord on Michelin Tire - Henry Jay Hannigan - 09-10-2008, 06:18
Broken Cord on Michelin Tire - Hisham Amaral - 09-10-2008 13:00
Broken Cord on Michelin Tire - erniecarpet@... - 09-11-2008, 08:42
Broken Cord on Michelin Tire - Neil & Pat - 09-11-2008, 12:32



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