Don....I'm going to reply to both of your topics. I did the demonstration on the Tyron bands when they first came to Los Angeles. They needed someone to blow the tire at 60 mph to demonstrate how the system works.
Tyron was developed in England and came over after they sold them to all the police and military in England.
They don't prevent flats, they just prevent the beads of the tire from coming off of the rim. As you see in alot of TV pursuits, once they blow the tire it eventually comes off of the rim and the suspect is riding on the rim only. Tyron bands prevent the tire beads from coming off because the deep groove in the center of the rim is covered with the band. A tire cannot be removed from a rim unless one of the beads is allowed to drop into that groove. You could run a tire right down to the side walls and they still wouldn't come off.
They are expensive and if you can stop your coach in a reasonable distance, your tire is not going to come off of the rim. The bands are really more suited to high speed police driving. They may save ruining an aluminum rim if you can't pull over right away.
If you do buy them they are just a band with a bolt that tightens the band around the rim. No special tools, but alittle bit of a hassle because the tire has to be fully mounted and the sidewall depressed while the band is installed and tightened.
My Department bought about three thousand units several years ago.
Don & Mary
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