Andy Asberry wrote:
On Fri, 19 Aug 2005 07:45:29 -0700, Jim Stewart
wrote:


carl mciver wrote:

"Pete Keillor" wrote in message
...


The tread bands are wrapped circumferentially and are the best wrapped
part of the tire due to the least amount of flex needed and highest
pressure. When a tire fails the tread is rarely part of it. When tires
explode (car or aircraft tires, even) they blow out sideways, which is why
you see a roll in cage at places that do semi truck tires.

The cage is to catch the split ring, not
pieces of the tire.



Even tubeless tires (no split ring) are required to be placed in a
cage.

Perhaps now, but not when I was in the business.
In any case, the discussion is about semi tires
which have a split rim that can do grievious
bodily harm if they pop out and hit you. I've
known of 2 people seriously injured that way,
and nobody injured by flying rubber.