LaterJohnDunlopmadeapneumatictyre.Themainreasonbehindthemakingofthetyrewas
thesevereheadacheshischildwasfacingridingthebicycleontheroughroads.Hisdoctor
advisedhimtoencouragehissontocycleonaregularbasisasanexercise.Thedoctoralong
withDunlopmadethetyrewhichwasusedbyacyclistinaracewhichwaslaterwonbyhim.
Dunlopappliedforthepatentbutwasnotgivenoneasthepatentforsimilarworkwasalready
given to William Thomson buthis work of showinghow sturdythe tyre is won him the
appreciation.Thismarked thestartofthelargescalemanufactureoftyres.Itsmanufacture
involvedmanystages,oneofthembeingthevulcanizationofrubberwhichinsimplerterms
meanshardeningofrubberwhichwasmadepossiblewiththehelpofsulphur.LaterMichelin
cametothemarketintroducingitsnewradialtechnology,acquiringanonfunctionalautomobile
companytheyfusedtheirtechnologywiththecars.Laterthisideaspreadacrosstheglobeand
many car companies adopted it.
Parts of the tyre,
- Tread:Itisthepartofthetyrethatisincontactwiththeroad.Itismadeofthickrubber
layermakingsurethatitdoesnotwearoutquicklyandthusprovidespropertraction
and grip foralongertime.Tread containsgrooves andvoidsespecially forthe soft
terrains like mud and snow. They help in channelisingmoisture and thus helps in
increasingthegrip.Theratioofplainareatotheareathathasgroovesdependsupon
theterrainwheretheautomobilehastobetakenlikethegroovepercentislessformud
ascomparedtosnow.Thestructureoftreadisalsodesignedkeepinginmindaboutthe
noise pollution that occurs on highways.