Since no one has touched this, perhaps more info is in order.
When I note lateral play -- I mean 90 degrees to the direction of rotation of the wheel -- I can grab the wheel (or brake disk when the wheel is off) and move it in & out toward the Differential. I cannot do this on the Driver's side. Wheel also feels stiff to rotate.
1986 300E Anthracite + ECodes + MB Mileage Award