Suspension problem
2000 BMW 740 V8 Two Wheel Drive Automatic 93000 miles
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Starting around 40 mph on up, when the brakes are applied lightly the steering wheel starts a back and forth oscilation that can be controlled by either letting off the brake or pushing harder on the brake. I suspect maybe the idler arm needs replacing or maybe the Struts. Can you please give me your input.

Thanks
Nathan

The center track rod, the idler and the thrust rod bushings are all causes of this concern, if the thrust arm bushings show signs of leakage, replace them, if the idler has play, replace it, there is a bulletin for the center track getting hot from the exhaust and making noise and there is an updated part number.