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10-11-2007, 02:03

Thanks Eric, All this vehicle stuff is open to debate. I was just
thinking it's like changing oil on cars. I tend to go with a
conservative approach in this as well. Better too often rather then
not often enough, so why would I do differently with tires? Consider
that a neglected oil change wouldn't result in a injury or God forbid
a death where a bad tire could? Thanks again for the help. I needed
to vent a little. John
>
> Hello John,
>
> Let me first say, I'm no tire expert, but I can share what we
learned from an expert at the
> recent Lone Star Birds Schulenburg rally seminar:
>
> 1. Exposure to sun (UV) ages tires and may show up as cracks on
the tire exterior.
>
> 2. Low inflation pressures age a tire from excessive sidewall
flexing and heat buildup.
> This may show up as cracks on the tire interior and/or exterior.
Blue Bird recommended
> tire pressures tend to be low to give a good ride. Generally
speaking, tires inflated to
> 90-110 psig will have better life than tires run at 60-80 psig.
>
> 3. An invisible form of tire aging occurs when the steel belts
within the tire corrode and
> loose strength. Exposure to oxygen and moisture are the primary
causes of belt aging.
> Improper tire repairs can promote moisture infiltration and
corrosion. When the belts
> loose enough strength, catastrophic failure (blowout or
disintegration) can occur.
>
> 4. Using pure nitrogen in tires reduces the oxygen exposure and
corrosion of the belts.
> Tires also run cooler and this helps slow the effects in item 2
above. The benefit is
> extended tire life. Nitrogen has been used for years in aircraft
and mining industry tires
> and is now being used more in commercial and private vehicle tires.
>
> 5. There is currently no economically viable method to check the
condition of the internal
> tire structure for corrosion or delamination. The useful life
guideline remains at 7-8
> years. We can push it another 4 or 5 years, but we are taking a
chance when we do.
>
> Regards, Eric in San Antonio
> 84FC35SBWL2
>
> --- In WanderlodgeForum@yahoogroups.com, "bubblerboy64"
wrote:
> >
> > I find this tire subject interesting and at the same time rather
> > puzzling as well. How is it that some ten year old tires
show "no"
> > sign of age and weather deterioration and others are described
> > as "cottage cheese" at about the same age. (And on the inside of
the
> > tire while the outside shows no problem) Now I wouldn't expect
them
> > all to be identical but its difficult for me to understand what
the
> > variables are. It would be helpful to know because obviously then
> > perhaps action could be taken to preserve them as much as
possible.
> > Obviously covers and proper inflation etc are important. Then
there
> > is the question, can you really visually see what is going on.
Could
> > you have a situation were the tires looks good on all visible
> > surfaces inside and out and have issues deeper within the tire?
I
> > have to go with the prevailing wisdom on this and trust that I am
> > doing the right thing and not wasting money. It seems to me
there is
> > not as much science and more religion on this then I am
comfortable
> > with. However, certainly better safe then sorry. I have seen
guys
> > driving tires which I swear you could see the air inside. But it
is
> > extremely hard to throw out tires which look new isn't it?
> > John Heckman
> > central Pa
> > 1973 FC
> >
> >
> >
> >
> > >
> > > Scott,
> > > Why didn't you ask the tire dealer to buy them off you??? When
I
> > replaced the tires on my coach, I asked them before I made the
> > purchase, what would you give me for the carcass??? They told me
they
> > would give me $50 each, I said sold!!!
> > > HTH
> > >
> > > Sea Ya
> > > Larry
> > > NYC
> > > 84 35FCSB
> > >
> > > ----- Original Message ----
> > > From: Scott Forman <sforman@>
> > > To: WanderlodgeForum@yahoogroups.com
> > > Sent: Wednesday, October 10, 2007 8:03:50 PM
> > > Subject: [WanderlodgeForum] Re: Just to stir the tire pot....
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > I left them there. Interestingly enough, they were
not
> > the regular
> > >
> > > highway treads, but rather the deeper square "drive" treads
like
> > one
> > >
> > > might find on a dump truck. Don't know why the previous owner
had
> > >
> > > those on there, he must have got a deal at some point.
Frankly, I
> > >
> > > don't care what they do with them, I just want to forget about
the
> > >
> > > cost of replacing them.
> > >
> > >
> > >
> > > Scott
> > >
> > >
> > >
> > > --- In WanderlodgeForum@ yahoogroups. com, "Jon"
wrote:
> > >
> > > >
> > >
> > > > --- In WanderlodgeForum@ yahoogroups. com, "Scott Forman"
> > <sforman@>
> > >
> > > > wrote:
> > >
> > > > >
> > >
> > > > > The tires on my tag axle were replaced today. I did so
because
> > >
> > > the
> > >
> > > > DOT
> > >
> > > > > dates on them were 1994 (not 2004, 1994, as in 13 yers
old).
> > >
> > > They
> > >
> > > > > showed no signs of age, cracking, anything, just old age.
When
> > >
> > > > they
> > >
> > > > > came off, the insides looked absolutely fine. The tire
guys
> > said
> > >
> > > > that
> > >
> > > > > while they agreed that changing them out based on age was
> > >
> > > > the "right"
> > >
> > > > > thing to do, if they viewed the tires without knowing the
date,
> > >
> > > > they
> > >
> > > > > would approve them for use without pause. Maybe the tags
just
> > >
> > > > don't
> > >
> > > > > get as much abuse and wear.
> > >
> > > > >
> > >
> > > > > Scott Forman
> > >
> > > > > 86 PT38
> > >
> > > > > Memphis
> > >
> > > >
> > >
> > > > Scott when I replaced my tires they were perfect but had a
dot
> > date
> > >
> > > > of 1989. When I had them removed they showed no sign of wear
on
> > >
> > > the
> > >
> > > > outside or on the inside as well.
> > >
> > > >
> > >
> > > > So what did you do with your old ones? I bet the tire guy
just
> > sold
> > >
> > > > them to a re-treader and now they will be recycled to run
down
> > the
> > >
> > > > road on a big rig.
> > >
> > > >
> > >
> > > > Maybe someday they will have some non destructive testing
done on
> > >
> > > our
> > >
> > > > expensive tires to see whether or not they are need of
> > replacement.
> > >
> > > > But for now most us try to play it safe and replace our
rubber
> > with
> > >
> > > > new when the magic date comes up at seven years old.
> > >
> > > >
> > >
> > > > Jon
> > >
> > > > Rebel Bird
> > >
> > > > >
> > >
> > > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > 
> > >
> > >
> > >
> > > 
> > >
> > >
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> > > 
> > >
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> > >
> > >
> >
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