Broken Cord on Michelin Tire

[bubblerboy64]

Good question David, I know that blow outs are more likely when the
tire is under inflated because the side walls are flexing and causing
heat buildup which weakens the tire. There is some logic however to
the thought that a maximally inflated tire might not handle the road
hazard because of the inability to flex. On the other hand an under
inflated tire might flex too much and result in a stretched or torn
belt(right?). The air pressure does afford a cushion. So my
suspicion is that a properly inflated tire (even if its maximum
inflation) is the way to go. You would hope all this is factored
into the tire design by the engineers who build the darned things.
Just my logic which could easily be wrong. You would not want to
inflate a tire over its max because I think your logic would
certainly apply at that point. Another way to think of this is you
have pressure pushing out from the inside (inflation pressure) vs
forces from the out side which have to be kept in balance.

John Heckman
central Pa
1973 FC


>
> Are highly inflated tires more prone to these failures? The recall
> for the 450LXi specifies running tires at 130 psi. If the tire is at
> max inflation then it is less able to deflect to road
discontinuities.
> Seems like you'll likely have more "broken belt" issues at max
> inflation???
>
> David Brady
> '02 LXi, NV
>
> Pete Masterson wrote:
> >
> > I agree that the 'broken belt' thing is likely a result of a road
> > hazard. While I haven't had any problems with my Toyo tires on my
> > coach, over the years, I've had a several tires on my automobile
(s)
> > ruined by construction -- Indeed, a few years ago, when BART was
> > being built in the SF Bay Area, I lost several tires due to
hitting
> > pavement from a gravel stretch where a subway was being built
using
> > the cut-and-cover method. While I certainly tried to drive
carefully
> > through the extensive construction zones, at night there were
times
> > you just didn't see a transition until you hit it with that
sickening
> > thud. Often the tires don't actually display any problems until
days
> > (or weeks) after the damaging event. The damage occurs, then the
> > flexing of the tire causes the damage to spread until the tire-
cord
> > is compromised.
> >
> > Michelin makes generally good, tough tires. It's always possible
that
> > a manufacturing defect was involved, but it's unlikely. More
likely
> > there was a road hazard event that let to the failure. In that
case,
> > most tire companies don't cover the damage (but some companies may
> > cover road hazard damage), so you'll need to enquire with a
Michelin
> > dealer.
> >
> > Pete Masterson
> > '95 Blue Bird Wanderlodge WBDA 42
> > aeonix1@mac. com
> > On the road at Idaho Springs, CO
> >
> > On Sep 8, 2008, at 10:21 AM, Gregory OConnor wrote:
> >
> > > you guys should find a trucker or trucking company to buy your
tires
> > > prior to 3 or 4 years of age. rotating out a set every year or
so
> > > will put new one on the front of your bus and run the tread off
the
> > > used tires. its a green thing to do because the tread will be
used up
> > > and the casing will be good for a retread. Tire Jobbers, can
set you
> > > up with good credit for rotating out your used tires. I screw
cords
> > > up jumping curbs and potholes, kinda doubt it is a Mfg prorate
thing.
> > >
> > > GregO'Connor
> > > 94ptRomolandCa
> > >
> > > --- In WanderlodgeForum@ yahoogroups. com
> > , "Ross"

> > > wrote:
> > >>
> > >> Hi,
> > >> Just a note about reporting the "failure". The request by the
NHTSA
> > >> (national highway traffic safety assoc.) is for all failures,
not
> > > just
> > >> blow-outs. In the requested information, there is a line
> > >> "Nature of the reported failure (slow leak,blow-out, worn etc)"
> > > This
> > >> can be important for the safety of all BlueBirds and all RV's
> > >> (especially those using 315 tires)
> > >> Ross
> > >> 2006 450 LXi
> > >> Here is the information:
> > >>
> > > http://nhthqnwws112 .odi.nhtsa. dot.gov/acms/ docservlet/
> > Artemis/Public/ P
> >
<http://nhthqnwws112.odi.nhtsa.dot.gov/ac...is/Public/
P>
> > > ursuits/2008/ RQ/INIM-RQ08004- 29624.pdf
> > >>
> > >> --- In WanderlodgeForum@ yahoogroups. com
> > , "Randy Merrill"
> > >> wrote:
> > >>>
> > >>> Hi Everyone,
> > >>>
> > >>> The left front tire on my coach has a broken cord. The tread
is
> > > uneven.
> > >>> I am getting the tire replaced next week before I head out on
a
> > > 1,500
> > >>> mile trip. The tire only has 27,000 miles on it. Does anyone
know
> > > if
> > >>> Michelin has a warranty on tires? Has anyone else had a
problem
> > > with
> > >>> cord breakage on Michelins?
> > >>>
> > >>> Thanks,
> > >>>
> > >>> Randy Merrill
> > >>> 2003 40'
> > >>> Ocala, FL
> > >>>
> > >>
> > >
> > >
> >
> >
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