Wear and tear and service life of components

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Factors

The mileage of wearing parts such as brake discs, brake pads, chains, belts and tires depends on various parameters:

  • Driving style
  • Route profile
  • System weight
  • Using recuperation (button ring) and setting the brake sensor
  • Use of the bike as a "fair-weather" or "all-weather" bike
  • Care
  • It is impossible to make a general statement as the parameters are too individual

Own experiences

Experience with my ST3 (as of Feb. 2025, 34,010 km):

  • Chain: KMC e11 EPT - approx. 10'000 - 11'000 km (oiled after approx. 500-1'000 km)
  • Sprocket 11, ditto chain, 13 etc. as required
  • Tires: Pirelli Cycle-e ST: changed:
    • In front: after 28,353 km
    • Rear: after 15,000 km (no flat tires so far)
  • Brake pads: (hilly terrain, recuperation used, brake sensor 100%)
    • Rear: SwissStop since 29'710 km, still good *
    • front: TopBrake since 20'613 km, still good *
  • Brake disks: Original
  • Front wheel bearing: 28'353 km
  • Freewheel: Original
  • Bottom bracket: 34'010 km
  • BQ983 battery: 21,000 km until SoH 74% was reached

* Replaced at 4,300 or 13,487 km due to squeaking

See also:

> See also PROBLEMS - chain (-blade) / pulleys and belts:

  • ,Chain jumps, slips, crunches, is thrown off'
  • 'Chainring / bottom bracket - wear and tear?
  • 'Broken belt, has lost teeth'

> See also SCHALTUNG - 'Comparison: costs / care / (life) maintenance' under life expectancy

> See also here in the FAQ:

  • 'Chain - measure wear'
  • 'Number of chain links / brand?
  • Care...'