Everytime I go out for a ride, after a few kms my brakes grab some metal-filings(its always the same material!) and start scraping the wheel...previously it was only once every few weeks, but nows it's happening almost every day! (I use my bike mostly for commuting trips). I have a few conclusions
1. The brake manufacturer has a conspiracy that involves mixing filings into the brake pads, thus making me dig out massive amounts of rubber everytime i fix it, making the brakes wear out faster.
2. The wheel rim is made of dodgy metal stuff that scrapes off.
3. The road that I take everyday is laden with metal filings that get trapped in the brakes
4. My pads are magnetic and attract metallic stuff.
What do you guys think is the problem, and how do i fix it? It's really annoying having the remove the brakes to scrape the stuff off all the time.
Plus the bike is a hybrid that is about 4 months old.