[DeTomaso] old tires

Mon Apr 19 20:23:34 EDT 2010

Michael,
That is the way that I became involved in one of my businesses.  We
convert passenger motor coaches (buses) into high end private coaches
(rock star buses).  If you have ever seen a motorhome frame, or worse
seen one after it had an accident, you would never ride around the block
in one.  At least a million mile bus is engineered to support its weight
on the roof.  You have an excellent chance of surviving.
GPD4

On Sun, 18 Apr 2010 20:54:05 -0400 "michael at michaelshortt.com"
<michaelsavga at gmail.com> writes:
> i couldn't write more earlier from my cell phone but wanted to share 
> a
> story.  i was almost killed in 2003 because of an old tire.  i had 
> just
> bought a motorcoach near Ocala, Fl and was driving it away from the 
> place
> where i bought it towards Savannah, Ga.  Back two lane roads to get 
> back to
> up to Orlando, exactly 7 miles from the dealer, the left front tire 
> blew out
> and the Motorcoach veered left into the oncoming lane, right in the 
> path of
> a semi truck and trailer loaded with cattle.  Luckily, I have a 
> little upper
> body strength and i man handled the motorcoach back into my lane 
> just as the
> semi's mirrors sheared my mirrors off the drivers side.  the tires 
> were 7
> years old.  i will never drive on tires older than 5 years old under 
> any
> circumstances, esp at 100 mph.   In my case, tire destroyed, inner 
> fender
> well destroyed, brake lines destroyed, wheel destroyed.  fiberglass 
> damage
> was fixable.
> The Oh S&^% moment came weeks later when I saw what kind of 
> structure the
> motorcoach
> had under the fiberglass nose and above the steel frame work of the 
> chassis,
> virtually NOTHING.  If the semi truck with it's 80,000 of mass would 
> have
> actually hit me head on, i would have been a speed bump covered in 
> cow turds
> spread out for 300 yards on a back Florida road.
> 
> A catastrophic tire failure at 100 mph in a Pantera could kill you, 
> you can
> kill other people, you will destroy the wheel at a minimum, body 
> damage if
> you are just lucky.
> 
> Park the car until you put tires on it PLEASE.
> 
> Michael Shortt
> 
> 
> 
> On Sun, Apr 18, 2010 at 3:35 PM, Charles McCall 
> <charlesmccall at gmail.com>wrote:
> 
> > I had a set of Pirelli P7R's, in 345-35-15 flavor, split wide open 
> on me in
> > less than 30 miles.
> >
> > Brand new tires (un-used), with gorgeous treads and the little 
> rubber
> > nipple
> > things but they split right down the middle. I repeat - they had 30 
> miles
> > on
> > them when they failed.
> >
> > They were also 12 years old. I was lucky and was going about 25mph 
> when I
> > heard a "BANG!!!!!!". I pulled over to see what the noise was and 
> noticed
> > the car sagging to one side.
> >
> > 15" tires are hard to find and can be expensive.
> >
> > Massive body work on your car, or extensive surgery on you because 
> your
> > tire
> > blew out in the first curve can be even more expensive.
> >
> > After first-hand experience with a quality tire that blew out on 
> me, I
> > won't
> > run old tires again, regardless of how nice and new the treads 
> look...
> >
> > Charles McCall
> > 1985 DeTomaso Pantera GT5-S #9375
> > "Raising Pantera Awareness Across Europe"
> > http://www.poca.com/index.php/gallery/?g2_itemId=2323
> > -----Mensaje original-----
> > De: detomaso-bounces at realbig.com 
> [mailto:detomaso-bounces at realbig.com] En
> > nombre de JDeRyke at aol.com
> > Enviado el: domingo, 18 de abril de 2010 20:59
> > Para: rtaspl at aol.com
> > CC: DeTomaso at realbig.com
> > Asunto: Re: [DeTomaso] old tires
> >
> > In a message dated 4/18/10 8:26:09 AM, michaelsavga at gmail.com 
> writes:
> >
> > > So the BIG question to the group is - are the (9 yr old) tires 
> safe to
> > > run over 100mph or is it a heat/time thing?
> > >
> > Every case is different. I've run premium older tires well 
> over100mph until
> > cord shows. Others have had cheap near-new tires delaminate at 60 
> mph,
> > causing body damage. Racing tires have no age-fighting chemicals 
> in their
> > compounds so they age faster. Its also where the tires spent most 
> of their
> > time.
> > Ozone and sulfur gasses in the atmosphere attack rubber compounds 
> and crack
> > the sidewalls & treads, even inside garages. Time and high storage
> > temperatures (or low inflation pressure that overheat the skins) 
> also ages
> > &
> > drives
> > out plasticizers from the rubber, making them harder and more 
> prone to
> > crack.
> > Stored in downtown areas where there are many industrial 
> pollutants
> > floating
> >
> > around, tires might last a couple of years. A useful gauge is 
> whether
> > freshly-polished silverware turns black while you watch; the same
> > pollutants
> >
> > cause silver-blackening.
> > Stored indoors, in quiet pollution-free rural areas away from 
> factories or
> > electric motors which generate ozone, tires   can last a good 
> decade or
> > more. A pro inspection will tell you more- and this will not 
> likely come
> > from a
> > highschool dropout at the gas station who sells on commission. I'd 
> take the
> > mounted tires to someone who distributes race tires; he's likely 
> more
> > knowlegable and more interested in keeping you alive so you'll 
> come back
> > again.
> > Bottom line- its the same as a safety helmet; if you want to be 
> perfectly
> > safe, junk 'em every few years. If you're poor, get them 
> pro-inspected
> > before
> > spending more time & hard-earned money. Pilotsports are getting 
> scarce
> > these days!
> > My 2¢- J DeRyke (NOT a tire engineer, just a consumer. Use above 
> at your
> > own risk!)
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> 
> 
> -- 
> 
> 
> 
> 
> 
> 
> 
> Michael L. Shortt
> Savannah, Georgia
> www.michaelshortt.com
> michael at michaelshortt.com
> 912-232-9390
> 
> 
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