strange internal tire wear

I was going through a pile of used tires to find one to temporarily
put on the taurus until i can get the rack fixed. I found one tire off
a GM product that looked OK from the outside with 60% tread or so.

I dismounted it to remount it on a Ford rim and found a surprise. There
was a pile of fine shredded rubber inside the tire. ANd when i looked
up to the under side of the tread, you could see the steel belts showing
where the rubber flaked off .

What could cause such a tire failure?
Never seen this before.

Bob

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On Oct 3, 10:31 pm, Bob Urz > wrote:
> I was going through a pile of used tires to find one to temporarily
> put on the taurus until i can get the rack fixed. I found one tire off
> a GM product that looked OK from the outside with 60% tread or so.
>
> I dismounted it to remount it on a Ford rim and found a surprise. There
> was a pile of fine shredded rubber inside the tire. ANd when i looked
> up to the under side of the tread, you could see the steel belts showing
> where the rubber flaked off .
>
> What could cause such a tire failure?
> Never seen this before.
>
> Bob
>
> ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----http://www.newsfeeds.comThe #1 Newsgroup Service in the World! 120,000+ Newsgroups
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Driven excessively with "low air pressure"

dahpater > wrote in
ps.com:

> On Oct 3, 10:31 pm, Bob Urz > wrote:
>> I was going through a pile of used tires to find one to temporarily
>> put on the taurus until i can get the rack fixed. I found one tire
>> off a GM product that looked OK from the outside with 60% tread or
>> so.
>>
>> I dismounted it to remount it on a Ford rim and found a surprise.
>> There was a pile of fine shredded rubber inside the tire. ANd when i
>> looked up to the under side of the tread, you could see the steel
>> belts showing where the rubber flaked off .
>>
>> What could cause such a tire failure?
>> Never seen this before.
>>
>
>
> Driven excessively with "low air pressure"
>


Like 5 psi.

--
Tegger

Bob Urz wrote:
> I was going through a pile of used tires to find one to temporarily
> put on the taurus until i can get the rack fixed. I found one tire off
> a GM product that looked OK from the outside with 60% tread or so.
>
> I dismounted it to remount it on a Ford rim and found a surprise. There
> was a pile of fine shredded rubber inside the tire. ANd when i looked
> up to the under side of the tread, you could see the steel belts showing
> where the rubber flaked off .
>
> What could cause such a tire failure?
> Never seen this before.

What makes you think the tire failed? Was there an obvious blowout?

Jeff wrote:
> Bob Urz wrote:
>
>> I was going through a pile of used tires to find one to temporarily
>> put on the taurus until i can get the rack fixed. I found one tire off
>> a GM product that looked OK from the outside with 60% tread or so.
>>
>> I dismounted it to remount it on a Ford rim and found a surprise.
>> There was a pile of fine shredded rubber inside the tire. ANd when i
>> looked
>> up to the under side of the tread, you could see the steel belts showing
>> where the rubber flaked off .
>>
>> What could cause such a tire failure?
>> Never seen this before.
>
>
> What makes you think the tire failed? Was there an obvious blowout?

I got the tire mounted on a GM wheel and it was holding air.
After i dismounted it, i found the considerable pile of fine
rubber shavings inside of it and noticed the steel belts showing
from the inside.

If you call holding air ok, then it was not failed. But it looked
like a disaster waiting to happen to me. I have never seen a pile of
shredded rubber on the inside of a tire before. Even if it held air,
i probably did not do tire balance any good either.

Bob

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Bob Urz wrote:
> I was going through a pile of used tires to find one to temporarily
> put on the taurus until i can get the rack fixed. I found one tire off
> a GM product that looked OK from the outside with 60% tread or so.
>
> I dismounted it to remount it on a Ford rim and found a surprise. There
> was a pile of fine shredded rubber inside the tire. ANd when i looked
> up to the under side of the tread, you could see the steel belts showing
> where the rubber flaked off .
>
> What could cause such a tire failure?
> Never seen this before.
>
> Bob
>
> ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet
> News==----
> http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+
> Newsgroups
> ----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Toss the tire. It is scrap. What you saw is the result of driving a tire
with low air pressure. That causes the belts to flex more than they
should and the tire heats up. The heat causes the inner liner rubber to
break down and flake off. Doesn't take very long either.
--
Steve W.
Near Cooperstown, New York

Several months after buying a new set of tires, my wife had one go
flat on a trip. I took it into the shop to get it repaired after
getting her on the way with her spare.

We found the same thing inside. The dealer told me that it was caused
by running nearly flat for an extended period of time. She noticed
nothing. I check pressure once a month and run about 3 psi over the
car placard. This is the 1st time I've seen anything like it. I hope
it was the last.

Aside, these were premium tires, and all 4 were from the same lot.

On Thu, 04 Oct 2007 08:57:59 -0500, Bob Urz >
wrote:

>Jeff wrote:
>> Bob Urz wrote:
>>
>>> I was going through a pile of used tires to find one to temporarily
>>> put on the taurus until i can get the rack fixed. I found one tire off
>>> a GM product that looked OK from the outside with 60% tread or so.
>>>
>>> I dismounted it to remount it on a Ford rim and found a surprise.
>>> There was a pile of fine shredded rubber inside the tire. ANd when i
>>> looked
>>> up to the under side of the tread, you could see the steel belts showing
>>> where the rubber flaked off .
>>>
>>> What could cause such a tire failure?
>>> Never seen this before.
>>
>>
>> What makes you think the tire failed? Was there an obvious blowout?
>
>I got the tire mounted on a GM wheel and it was holding air.
>After i dismounted it, i found the considerable pile of fine
>rubber shavings inside of it and noticed the steel belts showing
>from the inside.
>
>If you call holding air ok, then it was not failed. But it looked
>like a disaster waiting to happen to me. I have never seen a pile of
>shredded rubber on the inside of a tire before. Even if it held air,
>i probably did not do tire balance any good either.
>
>Bob

Bob Urz wrote:

> I was going through a pile of used tires to find one to temporarily
> put on the taurus until i can get the rack fixed. I found one tire off
> a GM product that looked OK from the outside with 60% tread or so.
>
> I dismounted it to remount it on a Ford rim and found a surprise. There
> was a pile of fine shredded rubber inside the tire. ANd when i looked
> up to the under side of the tread, you could see the steel belts showing
> where the rubber flaked off .
>
> What could cause such a tire failure?
> Never seen this before.
>
> Bob
>

Running it flat.... There was a reason it was in the pile of junked
tires, after all.

I used to run a wheel refinishing shop. I had two wheels with tires come
in for leak repair within a short time of each other. One tire had a large
amount of crumbled rubber inside it, severe wear on the outside sidewall
and clearly had been run flat for some time. The other tire had a smaller
but still significant amount of rubber crumbs inside, but the outside was
hardly marked at all. If you saw the tire, you would say that it had brushed
against a curb while parking (unless you happened to notice that it went
all the way around the tire).

As an aside, I am amazed how low tire pressure has to be before the tire
is obviously flat. Even 15 psi will just look soft.
Dan

(This account is not used for email.)



GeorgeB ) writes:
> Several months after buying a new set of tires, my wife had one go
> flat on a trip. I took it into the shop to get it repaired after
> getting her on the way with her spare.
>
> We found the same thing inside. The dealer told me that it was caused
> by running nearly flat for an extended period of time. She noticed
> nothing. I check pressure once a month and run about 3 psi over the
> car placard. This is the 1st time I've seen anything like it. I hope
> it was the last.