I have started to bike to the gym at 6am and then to work for 7am, and for some reason my bike made a clanky noise when riding it, and could never figure out what the problem was. Well I noticed today that my rear tire was rubbing against the brake, and when I went to tighten the tire I found it was already tight. I am not a good mechanic so I woke my dad up from a deep sleep, and he found that the bearing was messed. He drove me to work and he brought my bike into the local bike shop to get the bearing replaced, but the guy said I had been riding my bike far too much (I knew I should have brought my bike in for a checkup last year) on a bad bearing. That resulted in the bearing getting ground into the rim shaft, and thus a total rim replacement. The total price of rim replacement was $35.00CDN, but it was worth it as now I can bike to the gym, work, and back home on a more comfortable ride. The only problem I have now with bike is my butt cant get used to the seat.