| Re: [GMCnet] Tires on Sale [message #91922] |
Wed, 14 July 2010 08:13  |
Gary Casey
Messages: 448
Registered: September 2009
Karma:
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Senior Member |
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It would be very interesting to me if I could get information on which to do
some statistical calculations:
1. Date codes of tires as purchased
2. Date codes of tires that are on a coach
3. Date codes of tires that had blow-outs or tread separations
If I could get as many data points as possible I could get an idea as to the
risk of using old tires. I don't doubt that there is an age-related failure
rate, but how wide is the distribution curve? Yes, many failed tires have early
date codes, but I suspect there are a lot of tires running successfully that
also have early date codes. And how old is the average tire as purchased? It
all might be interesting.
An observation: Aircraft tires have not, AFAIK, been subject to any kind of age
limitation and many are quite old. They typically sit for extended times and
then are subject to very high loadings and speeds. I've never heard of a
problem with separations of the belts. But I suspect they are never run hot for
any length of time.
Gary Casey
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