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WHAT IS EFFICIENCY?

Efficiency is the tyre's capacity to DELIVER THE ENERGY supplied by the cyclist in riding conditions.

Efficiency is expressed by the following formula: (energy delivered) / (energy supplied) = Efficiency.
As this formula always gives a result of less than 1, efficiency is therefore always expressed as a value between 0.00 and 0.99.

FOR THE TYRE PART, EFFICIENCY DEPENDS ON:

  • the nature of the rubber compound (presence of silica, ...)

  • the tread pattern

  • the density and construction of the fabrics (TPI, or number of threads per inch)

  • the architecture of the tyre, the reinforcements, …

  • the quality of the inner tubes used (MICHELIN :Latex>UltraLight>AirStop>Protek)

  • the tyre size (23>20>...)

  • the inflation pressure (8>7>6bars ...)

  • the tyre's rolling resistance


THERE ARE OTHER EXTERNAL FACTORS AFFECTING EFFICIENCY:

  • the nature of the road surface

  • aerodynamics

  • wheels and bearings