Well i just got a chance to check everything and all the pressure is ok, all the wheels have balancing weights on them. The shaking comes and goes its not constant and it always stops under the brake. Any other ideas??
Replace the bushings on your front control arms. i bet that's your problem.
Does it happen a little more if you're turning on the highway? like long sweeping turns at 140-150 km/h+ starts rattling like crazy?
Take it to your mechanic (i suggest RMP, mirek would suggest Bimmersport)
Replacing the bushings on front control arms isn't too expensive, and i know RMP has a press to pop the bushings into the control arms.