I bought a TREK FX SPORT 5 a couple of weeks ago and I've ridden it like 200km without any problems.
Today was the first time I biked when it was raining and I noticed after like 100 meter that there was some kind of scratching noise coming from the front disc. I stopped and looked for dirt/whatever but couldn't see anything.
The noise continued for the rest of the ride and I also noticed some screaming when breaking (only from the front brake).
When I got home I cleaned the bike and let it dry and now there are no sounds coming from the front brake and the wheel spins really good.
So, what do you guys think happened here? It felt like as soon as the brake/disc got wet, it started to make a "scratching" noise. Is there anything I can do to prevent this in the future?