AIR LESS TYRES
TYRES
 A Tyre is a ring-shaped component that surrounds a wheel’s
rim to transfer a vehicle’s load from the axle through the
wheel to the ground and to provide traction on the surface
over which the wheel travels.
 There are basically two types of tyre’s :
1. Pneumatic Tyre
2. Non-Pneumatic Tyre
TYRES
PNEUMATIC
NON-PNEUMATIC
PNEUMATIC TYRES
 A Pneumatic tyre which is also known as Air-filled tyre is
made up of an air tight inner core filled with pressurized air.
 The pressure of air inside the tyre is greater than
atmospheric air pressure.
 The first Pneumatic tyre was invented by John Boyd Dunlop
in 1888 on May street, Belfast.
 John Boyd Dunlop is the owner of one of the Ireland’s most
prosperous Veterinary parctises.
PNEUMATIC TYRES
 It was an effort to prevent
the headaches of his 10 year
old son Johnnie, while riding
his tricycle on rough
pavements.
PNEUMATIC TYRES
DRAWBACKS
 Puncture
 A Blowout at high speeds can lead to
dangerous accidents.
 Variations in air pressure changes the
tyre performance.
 So to avoid these outcomes we can use
NON-PNEUMATIC TYRES.
NON-PNEUMATIC TYRES
 Air less tyre’s or Non-Pneumatic
tyre’s are tyre’s that are not
supported by air pressure.
 The Tweel air less tyre was first
developed in 2005 by Michelin.
 Tweel = Tyre + Wheel.
 Tweel’s hub connects to flexible
polyurethane spokes which are
used to support an outer rim.
NON-PNEUMATIC TYRES
Parts
 TREAD WRAP : Made from
rubber and thermoplastic
resin.
 RING : Connects the
spokes.
 SPOKES : Made from
thermoplastic resin.
 WHEEL : Made from
Aluminium.
NON-PNEUMATIC TYRES
Working of a NonPneumatic tyre
 When the Tweel is put to
road, the spokes absorb
road impacts the same way
air pressure does in
Pneumatic tyres.
 The Tread and Shear bands
deform temporarily as the
spokes bend, then quickly
spring back into shape.
NON-PNEUMATIC TYRES
APPLICATIONS
 For Military vehicles and All Terrain Vehicles (ATV).
NON-PNEUMATIC TYRES
APPLICATIONS
 Used in small vehicles such as riding lawn mowers and
motorized golf carts.
In backhoe and bulldozers.
NON-PNEUMATIC TYRES
ADVANTAGES
 Durability and long life.
 Remains mobile even when some of the spokes are
damaged or missing.
 No Punctures or blow outs.
 Low to no maintenance is required.
 Less environmental impact.
 Facilitate recycling.
NON-PNEUMATIC TYRES
DISADVANTAGES
 Different manufacturing technique.
 Not as economic as pneumatic tyres.
 Lack of adjustability.
 Vibration.
NON-PNEUMATIC TYRES
FUTURISTIC DESIGN
 Aims to keep loses to
minimum.
 95% of manufacturing is
recyclable.
Hankook i-Flex.
NON-PNEUMATIC TYRES
CONCLUSION
 Manufacturers have started to focus on making NonPneumatic tyres.
 The main challenge is to make it more feasible and
economical.
 And when this is done AIRLESS tyres are the Future tyres.
SOURCES
 https://auto.howstuffworks.com/tweel-airless-tire.htm
https://www.bridgestonetire.com/learn/tiretechnology/airless-concept-tires/
https://www.thoughtco.com/john-dunlop-charles-goodyeartires-1991641
 Google.
 Pinterest.
THANK YOU