Also just an FYI if you have 2 different sets of tires or if the tires have a significantly different amount of tread left that can cause steering issues because for example if you have a set of tires with varying tread the coefficient of friction on each wheel, because one set of tires is gripping larger while the other may be gripping less causing a very slight slip. Also if you have cupped tread wear or one side tread wear that will cause vibrations. Some other things you can check are your brakes/rotors, if pads/rotors are excessively worn, aside from being a safety issue it can cause shimmying in the steering. Frozen caliper can also cause this.

__________________


Do your car and move up to Amsoil.