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Which property does the load index express?

  • A.The maximum load one tyre may carry
  • B.The maximum pressure to which the tyre may be inflated, expressed as a coded value rather than directly in units
  • C.The speed rating
  • D.The maximum load for the axle, which is shared between the two tyres fitted to it and must not be exceeded

Answer: A

The load index is a code read from a table, so ninety one corresponds to 615 kilograms per tyre. It applies per tyre, not per axle. Replacement tyres must equal or exceed the original index. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. Most errors here come from carrying across a result from a neighbouring case where it does not hold. A symptom that appears under one condition and not another is what narrows the diagnosis quickly.

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