I got my front Shinko 230 mounted and installed on the bike. Everything seems ok, and it balanced out nice, but if I spin the tire on the axle, it seems to shift from side to side a bit. I spun it and was able to measure about a millimeter or two of side to side movement where the tread meets the sidewall. Is this normal? Do I need to re-seat the bead? I looked at the bead alignment with flash light and it seems to be lined up all around the tire on both sides. I wanted to check before I installed the brake callipers in case I need to re-install the tire.