I took delivery a month ago. From the outset, I have a wheel shimmie/vibration between 55-65. Steering wheel rocks back and forth mildly and the car handles poorly in those speed ranges. Steering wheel correction every second. Dealer "Road Force" balanced wheels twice on Hunter 9700 machine. Car is silky smooth (better than delivry) up to 55-65MPH then the shimmie starts. I'm bringing back for a wheel swap from another like vehicle. What are your thoughts?

-Bad rim?
-bad tire?
-One of the rims hard to balance?
-alignment problem (toe-out)excarcebating shimmie?
-Road Force balance close, but not perfect?
-Bad or loose steering rack?

bring your car to 58-62 MPH and let me know if you feel a weird vibration or sense a sloppy handling problem (constant steering wheel correction). I hopes it not a driveline characteristic with all the V-6's

Input/feedback appreciated

 

ive had my car for a little over 2 months now and i havent had the problem you're writing. i actually drive that speed quite frequently every day as a good portion of the surface streets in my town are multi-lane,posted 50mph - 55mph,roads (gotta love So Cal).

do keep us posted on what happens.