Richard Tack wrote:
"Michelin unwrapped an early prototype of an airless tire, a product
that could change the face of an industry it helped found. With a
maximum safe speed of 170 miles per hour, the prototype performs
similarly to inflatable tires — with important differences.

'No more pressure checks, no more flats, no more spare wheels,' said
Daniel Laurent, Michelin director of conception and development.

The tire is made from 115 rings of tough resin laced with glass fiber
and remains roadworthy even when shot with a rifle. Tests show it will
outlast the average car, Laurent said, leaving just the outer treads to
be replaced periodically. No date has yet been set for its commercial
launch."

http://snipurl.com/9dwx


Are they heavy? That wouldn't be good for economy.

Wayne