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Which tyre component anchors it to the wheel rim?

  • A.The inner liner, which is bonded to the inside of the tyre and seals the air against the surface of the rim
  • B.The bead with its steel bundle
  • C.The sidewall, whose stiffness holds the tyre in position against the flange of the rim during cornering
  • D.The tread

Answer: B

A bundle of high tensile steel wire forms an inextensible ring that seats against the rim flange and cannot be stretched over it. The inner liner seals the air in a tubeless tyre. Both are essential but they do different jobs. Naming what changes and what stays the same is the reliable route through questions of this shape. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb. A single measurement chosen to respond to the one asymmetry beats several that respond to shared behaviour.

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