Tyres

[Talentless]

I thought you guys might like to see this excerpt from a rally news letter

TYRE FACTS

The hot conditions and abrasive roads make Cyprus a difficult challenge
for the World Championship's two tyre manufacturers, Michelin and Pirelli.
Michelin is offering its clients the ZB tyre for rocky stages, the Z for
hard ground and the ZA in case conditions turn damp or the road surfaces
are soft or loose. Pirelli's teams will have the option of either the K
(smooth conditions) or the XR, which will be used on rocky roads or
loose gravel. Both manufacturers have fitted their tyres with their
respective anti-deflation mousse systems to minimise the risk of
punctures.

Nice for a reference.

 

[Jordan]

Both manufacturers have fitted their tyres with their
respective anti-deflation mousse systems to minimise the risk of
punctures.

How would a system like this work?

 

[Talentless]

I believe it is a foam activated by a sensor which detects a drop in air pressure. The moosse fills the hole.