1. What is tyre ????

2. A tire (U.S. English)or tyre (British English) is aring-shaped vehiclecomponent that coversthe wheel's rim to protect itand enable better vehicleperformance. Most tires, suchas those for automobiles andbicycles,provide traction between thevehicle and the road whileproviding a flexible cushionthat absorbs shock. 3. On what basis should tyres be classified? 4. Tyre types and classifications Sizes EU labelling Tread Season of use terrain Speed rating 5. Tyre materials The materials of modern pneumatic tires aresynthetic rubber,natural rubber,fabriccarbon blacksilica They consist of a tread and a body. The treadprovides traction body provides containment for a quantityofcompressed air. 6. SUMMER TYRESBuilt with a soft andgrippy rubber compoundIn most instances, willbecome nearly useless nearor at the freezing pointThey will be noisierRecognized by its H or Vspeed rating and typicallymore aggressive treadpatternThey also expected toexpertly disperse deepwater. 7. WINTER TYRES designed specifically forthe snow and ice coveredroads, so whentemperatures decreasesthese will surely help on thetricky road surfaces. fine block design withgrooves that are deep ,also come with spikes,the rubber compound isperfect for lowtemperatures .They are very popular in 8. WET-WEATHER TYRES have a specially designed structuremaking them better adapted for theirapplication are cut or moulded withpatterned grooves . This allows thetyre to quickly displace the waterbetween the ground and the rubberon the tyre. As a result hydroplaningdoes not occurs. also made fromsofter rubber compounds to help thecar grip in the slippery condition. larger in diameter and smaller"footprint" reduces the chances of 9. ALL SEASON TYRESCommonly referred to as a Touring all-season:Are of a harder compound with softersidewalls quieter than any type of performancetireDesigned to last a long timeCan be used on wet, dry and, to alesser extent, snow covered roadsurfaces.have a good ability for waterevacuationTypically sport a T speed rating 10. ALL TERRAIN TYRES tyre tread patterns give stabilitywhen travelling over rocks, sand anddirt.have improved traction, greatergravel wear resistance and decreasedstone retention. provides exceptional on-roadhandling, with good driving comfort andlow noise. has a multi-layered steel cord beltand an extra rubber layer fittedbetween the belts.offer good versatility by offering 11. RUN FLAT TYRESdesigned to resist the effects ofdeflation when punctured, and toenable the vehicle to continue to bedriven at reduced speeds (up to55 mph (90 km/h)), and for limiteddistances of up to 100 mi (160 km). contains an extra lining within thetire that self-seals in the event of asmall hole due to a nail or screw. the loss of air is prevented fromthe outset such that the tire is eitherpermanently self-repairing or atleast loses air very slowly. 12. PERFOMANCE TYRESThis type of tire is conceived forthe utmost levels of grip .:Will excel in both wet and dryconditions.Are characterised by very stiffsidewalls for better corneringabilities and crisper handling.Will not work in cold weatherbecause their compound isdesigned to work at highertemperatures.Will wear out much fasterbecause they are intended to bestickier and will be noisier 13. TUBE 14. TUBELESS 15. ECO TYRESBy introducing silica to a tyrecompound the previouslyimpossible is made possible.it can absorb different amountsof energy at different frequenciesfor fuel consumption and grip. tyres maintain the correct tyrepressure and making allowancesfor varying speeds and differentdriving characteristics, Eco-tyresoffer a 20% reduction in rollingresistance which equates to a5% fuel saving. 16. bibliography www.nationwisevehiclecontract.co.uk www.apolotyres.com www.bettertyres.co.nz www.systraplan.com www.bridgestone.co.in "Fabric Inner Tube Lessens Blowout Hazards". PopularMechanics 63 (4): 488. April 1935. Retrieved 10 June2012. Jump up^ "Bullet Proof Tire Has Sponge RubberTube". Popular Mechanics 62 (6): 872. December 1934.Retrieved 10 June 2012. Jump up^ Scottish Evening Times, 30 May 1973, p. 2 ^ Jump up to:a b c Kranz, Rick (27 July 2009). "The air runsout of run-flat tires". The Center for Auto Safety. Retrieved10 June 2012. Jump up^ Jensen, Christopher (20 April 2008). "MichelinGiving Up on PAX Run-Flat Tire". The New York Times.Retrieved 2 July 2010.