i'd assume they are bushings and not bearings, so the shaft wobble could start - though that should change when you turn, speed up etc...
Any leaves and junk that could have been pushed in there?
Dave '07 M3 GT, manual, - black
Adders: backup sensors, current limited hi-beams (for long life), Fog light on with running lights (t=44332 PAGE2), low beam aiming switch adjustment (t=47722), dash squeak reduction, badges removed, door bumpers removed, auto up/down windows, under seat subwoofer, True hidden hitch (t=53213), rear camber fix (t=53425)
Info / help: outside running lights only as DRL (t=54453)
link example http://www.mazda3club.com/mazda3-mazdaspeed3-98/drl-my-corner-lamp-54453/