Notonlythetypesoftyres havechangedbutalsothegasusedtoinflatethetyrehasalso
changed.Theairwasusedinthepastasaprimarygastoinflatethetyrebutithadamajor
disadvantage that is when the automobile travelled at high speeds, the tyre heats up.
Sometimesthetemperatureofthetyreincreasestosuchanextentthatitblastsoffcausing
majoraccidents.Butitsrecentalternativenitrogengascoolsupwhenthecartravelsathigh
speeds.
Themostrecentinventioninthefiledoftyresistheairlesstyres.Asthenamesuggestsitisfree
ofairpressure.Itismainlyusedinplaceslikeconstructionsiteswheretherearehighchancesof
punctures.Thesetyreshaverubberstripsalignedbelowthetreadlayermakingthedrivemore
comfortable and cushiony. Michelin is the first companyto manufacture these tyres for cars.