Hey everyone,

The 420 is experiencing some (what feels like) up/down vibration when driving down the turnpike 55+

The front end has been rebuilt, everything except the center drag link and idler arm bushing has been replaced. Springs, shocks have been replaced too.

I'm not quite sure would cause this.

Tires out of balance?
Wheel bearings improperly torqued?
Motor Mounts?

Maybe the alignment? I do know that when I am in the middle or left hand lanes on the turn pike I have to hold the wheel at near 2 o'clock to drive straight. If I don't it will pull left. If I am in the right hand lane it drives better, only slightly adjustments right of center are needed... I'm not sure what that means. My 300D drives the same way. Frankly I find it largely annoying. Not sure what can be done?

Any ideas would be welcome.

Thanks!

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