Why before winter
In the rain, braking distance increases and pads wear out faster (water + mud = abrasive). Starting winter with worn-out pads risks scoring the rotor (expensive repair) during the wet season.
## When to change?
- Friction material < 1 mm: replace immediately.
- Braking that vibrates, squeals or lacks bite after cleaning.
- Metallic noise = the backing plate is touching the rotor → you've waited too long, check the rotor.
Organic vs metallic (sintered) in winter
| Type | Advantage | Disadvantage |
|---|---|---|
| Organic (resin) | Good bite in cold, silent | Wears fast in rain/mud |
| Metallic (sintered) | Lasts longer in wet conditions | Noisier in cold, wears rotor more |
| Semi-metallic | Compromise | — |
For muddy MTB/gravel or rainy commuting, metallics last much longer. For dry road riding, organic is sufficient.
