Shakes or Wobbles problem
1997 BMW 540 V8 Two Wheel Drive Manual 11600 miles
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what is the cause of a shimmy or wobble that only happens at 50 mph, any faster or slower and it stops 2 mph either way and it is good but 50 mph wobbles she does wobble is getting worse. what it could it be?

It could be a bent wheel, are they the stock wheels and tires? Could be the thrust arm bushings too, are they sound, do they show signs of leakage? (they are fluid filled) check for worn suspension items too.