Gonna wait it out in that case, is seeing /feeling any sort of play in those lower control arms up front something the alignment garage should have picked up on and warned me about as it would have an impact on the alignment? they did so when they identified an issue with rear bushings when i last went for an alignment and so got em replaced.

so to recap braking and steering wobble = rotors? and if no wobble yet but starts to wobble with gentle low 40-50 speed braking = the front lower control arms?
PLUS possibility U joint in steering column is loose

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E53 X5 3.0d SUV prod.date 11/2004 eng.variant M57N Europe Right hand drive N