There are no front suspension parts that can CAUSE a vibration. If you have a tire causing a vibration, there are plenty of things in the front end that could WORSEN the vibration.

I would start by rotating the tires front to back and see if it changes. If it does, it's time to make sure you don't have a bent wheel and make SURE that the wheels are DYNAMICALLY balanced with no excessive road force variation (stiff spots.)

Once you get the tire/wheels where they make no more vibration you can then determine if there is anything worn out that is exacerbating the vibration.

It is possible that you have a bad motor mount or two. When they go bad and get the engine solid with the chassis, the vibration is unbelieavable, but at engine speed, NOT at wheel speed.

Good luck,