OK, so I replaced the rubber on my bike both front and back and the chain as well. Put the rear tire back on. I let it spin a few times and I thought I heard a rubbing sound and thought it was the chain because I didn't adjust it yet. So, I adjusted the chain put it back on and let it spin without tightening the tires all of the way and everything was fine. I tightened up the rear tire as much as I could (left a little leeway but still pretty tight) because I don't have a torque wrench anymore. Then I heard the "rubbing" noise again and followed it and it was actually the head of the allen bolts that bolt the rotors on grinding on the bracket that holds the rear breaks on. I then turned the bike off , put it in neutral and tried to turn the wheel myself and couldn't budge it. I then loosened the axel nut a little; still no rotation. Loosened it a little more; a little rotation but minimal grinding. Loosened it a little more and bam it worked just fine again. So, my question is, " Is this over tightening the axel bolt or is it something else"? Also, the front tire brake pads rub. I researched that a little bit is normal, but I can't even get a full rotation out of it. I took it off of the front bike stand and pushed it. A little grinding but wasn't really forcing it. Applied the front brakes it stopped. Released the brake and it rolled again with a little grinding. Propped it back on the front stand and again couldn't get more than a full rotation out of it. Do I need to bleed my breaks? Or is this ok? Thank you for your help.