Problems first started a couple weeks ago. The bike would sporadically make a grinding or whining noise when I rode it or walked it. It sounded like something was rubbing against the frame or some other part. Generally, if I braked then continued to move with the bike, the noise would stop. Now the grinding has turned into a louder squealing in the last couple of days. When I ride the bike will have an incredible amount of resistance. It will be extremely hard to pedal. Sometimes breaking will help, sometimes it won't. Its to the point where I can no longer ride my bike and even walking with it is a workout. At times I have to lift the rear wheel us as I walk it because the rear wheel will lock up. I've tried looking at the chain, and everything appears to be okay, but I'm not 100% sure. Any ideas what my problem could be and how I can fix it? Could it just be that I need to oil up the chain?
This is a single speed cruiser bike BTW.
This is a single speed cruiser bike BTW.