Tire

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Tire


  • The tire’s INNERLINER -- keeps air inside the tire.
  • The CASING (or CARCASS) – the internal substructure of the tire.
  • The tire’s BEAD -- assures an airtight fit with the wheel and efficient transfer of forces from the wheel to the carcass of the tire.
  • BEAD FILLER – reduces flex and aids in deflection.
  • A Tire’s BODY PLIES – withstands the forces of the tire’s inflation pressure, provides the mechanical link from the from the wheel movement to the tread are and flexibility to supplement the vehicle’s suspension system.
  • The SIDEWALL -- protects the side of the tire from road and curb attack from atmospheric degradation.
  • A tire’s BELTS -- stabilize and strengthen the tread, allowing forces to be efficiently transferred to thetread area.
  • Its BELT EDGE INSULATION – helps to reduce friction.
  • The TREAD -- provides the frictional coupling to the road surface to generate traction and steering
  • Forces.


  • Ribs are a pattern that includes grooves around the tire in the direction of rotation.
  • Lugs are the sections of rubber that make contact with the terrain.
  • Tread blocks are raised rubber compound segments on the outside visible part of a tire.
  • Sipes are small lateral cuts made in the surface of the tread to improve traction.
  • Kerfs are shallow slits molded into the tire tread for added traction – this term often used interchangeably with sipes.
  • Grooves are circumferential or lateral channels between adjacent tread ribs or tread blocks.
  • Shoulder blocks are the tread elements of segments on the tire tread nearest to the sidewall.
  • Voids are the spaces that are located between the lugs.


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