alright bring up a old thread because I have the same issue. I tried road force balancing which helped but still some vibration there. Tried new wheels and tires. I notice most of the complaints are from older cars. My guess is wheel bearing a getting loose. I think they are still in spec range but like everyone says sensitive suspension. I taking the plunge and ordered new bearings since my car is @ 75k. I'lkl just consider this part of proactive maintenance. ($439 shipped from Turner MS, both fronts) My next bet is the tension rod control arm bushing. I plan also replacing that later date.
If anyone has new insight please add it here.
///M3... Don't want more power, Just want it to turn sharper one step closer each time. Ohlins RT, Vorshlag plates, RD sways, Full Evo Akra, ESS tune, SSK, Monoball, Adj. Toe link.