The on-road movement is significant - and repeatable. My opinion is it's much more than just a slightly worn bushing.
Same here. I'm convinced it's some sort of wheel alignment change when it happens. SOmething is causing a slight change in thrust.
My pass side upper strut mount it junk. I can hear it knock around. I wonder if it's bad enough to allow for camber or caster change under load. A reduction in caster would cause the car to pull slightly to the side with increased caster. If the pass side wheel moves forward slightly under load, that would make sense.
Under hard braking i notice no change at all. I have full control and the car goes straight.
I'm also starting to notice the same affect over big roadway dips. If the suspension unloads, i feel a slight pull to one side for a split second. Again...i assume from a slight wheel angle change.
Front strut parts are in the mail, and i already have control arms. I don't think it's the arms though. I need to do the struts anyway so i'm hoping this is that.
I did change out a rear lateral link about 10K miles ago and my rear is tight. I'll check again. But since i'm FWD
the rears are just coasting along and i notice a change when under power (or letting off) so i think my issue is up front.
This AM, at 60MPH i took my hands off the wheel (was on an empty highway) and gas enough gas to downshift. The front of the car shifted left slight (same feeling as if getting hit by a large gust of wind from the side) and the steering wheel went right maybe 1"on it's own. Car still went straight. I let off power and car shifted back to normal and wheel self centered. very strange.
I plan on getting under the car soon. I was actually debating grabbing my GoPro, mounting it to the fender pointed down at the wheel and doing some experiments and watching to see if the wheel is changing direction.