I thought I went slower than I should, and I went tire shopping today! I noticed before and after I changed the rear tire my brake rubbed a little on the right side. However it only rubs on one part of the rim which is near the reflector. It only rubs slightly, but you can hear it when the tire rolls slowly. When the tire rolls fast you can see a slight wobble, or that the wheel isn't perfectly round.
Is that a problem with the rim? Or a problem with the brake adjustment?