What happens is that the worn links allow the wheel carrier to tilt
under side load or torque load. Obviously, the direction the wheel
"steers" will depend on the force and which side it's applied to.
While driving, a side force tends to push sideways on the links,
allowing the wheel carrier to tilt inward on one side and outward on
the other. Both wheels will steer into the push with one more than
the other, usually, so the driver compensates and the car "crabs"
down the road. When the pressure subsides, the car then steers with
only the font wheels and veers over until the driver compensates
again. Very annoying.
When one side has good links and the other doesn't, only the wheel on
the bad side steers and this is much much different than when both
steer, especially on icy or wet roads.
Torque steer is similar, except that in that case the wheels tend to
both tip inward or outward, cancelling some of the effect. I've
noticed very much more obvious torque steer since I replaced the
links on the left side, but the crosswind motion is worse but not
dramatically . Even a Benz will show some response to a 30 mph side
gust!
Petee
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