Le gomme invecchianio?

[RedBrik]

una cosa interessante e scientificamente dimostrata è, per esempio, che usare azoto invece di aria compressa riduce di molto il consumo della gomma. E io che pensavo fosse solo una menata!

Studies of oven aging at 60 °C suggest that filling the tire cavity with pure nitrogen can reduce the rate of loss of peel strength and elongation-to-break by over 70% relative to air.

Peccato però che

It is important to note that practical considerations limit the reduction in oxygen level by nitrogen inflation to about 5% (versus 21% in air). To reduce the oxygen content further, it is necessary to purge the original air in the cavity several times and to use highly purified nitrogen which is not readily available to most consumers.