Brake Pad Calculator — Estimate Brake Pad Life

Brake Pad Life Estimation

• Base life: Rim ~3000 km, Disc resin ~2000 km, Disc sintered ~4000 km (mixed terrain, ~75 kg rider). These sit within published ranges: resin disc ≈ 800–2400 km, sintered disc ≈ 1600–4800+ km, rim ≈ 800–4000 km.
• Terrain: Flat (+50%), Mixed (baseline), Hilly (−40%), Mountain (−60%)
• Weight: Under 60 kg (+20%), 60–80 kg (baseline), 80–90 kg (−15%), Over 90 kg (−25%)
• Pad life = Base × Terrain × Weight multiplier
• Months to replacement = Pad life ÷ monthly distance (weekly distance × 52 ÷ 12)

These figures are rough heuristics, not precise wear measurements. Real-world pad life varies 2–4× with weather, braking technique and front/rear bias — wet, gritty winter riding can roughly halve pad life, and dragging the brakes downhill wears pads far faster than firm, intermittent braking. Use the result as a service-interval guide, not a guarantee, and inspect pads regularly: replace disc pads when under ~1 mm of compound remains, and rim pads when the wear-indicator grooves disappear. You can override any base figure in Advanced Options if you know your own real-world pad life.