Goodyear EMT Run-Flat Technology

 

Goodyear's EMT (Extended Mobility Tire) tyre technology permits the motorist to drive up to 80 kilometres at speeds up to 80 kmh on a totally deflated tyre, thereby consigning the misery of being stuck on the hard shoulder of a motorway with a flat tyre to the past. Significantly EMT tyres also help avoid accidents should sudden deflation occur. EMT tyres need no special wheels although the use of a low pressure monitoring system (although not essential) is recommended.

There is no complicated mounting procedure required to fit the tyres, which can be fitted using standard tyre fitting machines.

Technical Details

1) An aramid spiral overlay in the tread area provides high speed performance and reduce centreline buckling under low inflation.

2) The outer ply in the sidewall shifts the neutral axis of bending outwards providing greater compressive stiffness in the inner ply.

3) The inner ply, meanwhile is heat tolerant and capable of taking the compressive stress in low inflation conditions.

4) Two rubber inserts made of a highly resilient compound are incorporated in the sidewall to provide high stiffness with low hysteresis. 5) EMT tyres have a pentagonal bead which provides extra stability under low inflation and prevents the bead slipping off the rim bead seat.

Conventional tyre - 0 Bar inflation

EMT tyre - 0 Bar inflation

6) The diagrams opposite show how hot a normal tyre can get when it runs deflated with heat resulting eventually in tyre damage. The proprietary chemicals and materials used in the EMT tyre permit it to run cooler and avoid damage.