‘Magic potion’ won’t let you or your tyres down
They seem to have done the impossible -- come up with a tyre that won't go flat.
They have this 'magic potion' inside the tyre called halobutyl.
Apparently the inherent qualities have been known but now Michelin are saying they have come up with a process, previously unachievable, to let the material be there under normal conditions -- in other words it has absolutely no effect on the working of the tyre.
But when a nail or something impinges, or there is a puncture, the magic goes to work to keep the tyre inflated. Don't know for sure when it will be available on the market, but we will keep you posted.