Hello, I have a Giant Sedona with flatproofing that I've had for probably a year and a half now. It's worked great, until recently. The problem appears to be in the brakes. Awhile back I noticed when I squeezed the brakes sometimes they would snap back. Nothing major it seemed. Then a couple days ago I noticed that the brake pads are slammed shut on the wheel of the bicycle. When I try to ride it, the brake rubs against the wheel slowing the bike down a bit. My dad told me nothing is wrong with it, and that I should ride it to let it 'work itself out'. However my gut tells me something is wrong. Not only that, there is what appears to be marks from the brake pad around the rim of the wheel. Any advice on how to fix it? Is there a way I can ajdust the brake pads?
Appreciate any help greatly. I ride my bike to the gym and back 9 miles a day. I love the excerise and I enjoy riding it.