OK guys i`m looking for help diagnosing this noise I have on my sons ZX3, we have this wupwupwup / humming noise that we can hear when we are going straight but it is much more pronounced when turning left, to me the sound defiantly seems to be coming from front the passenger side of the car, we have recently replaced the rear wheel bearings so I know its not the rears, does this sound like the front wheel bearing, and if it is the fronts could someone point me in the direction of a how to. T.I.A.