Originally Posted by '01 MA Bonneville
I posted a while back about shake in my steering wheel on the highway. Been down the rotate, balance, new tires road and just recently got new rotors and pads. Still going strong with the shake. Would the rims be the next thing to obviously check for dents, etc.? I figured that when the tires were replaced, they might have told me they saw a dent...maybe not. Any further thoughts or things to "look for" would be appreciated. i'd like to take it into a garage and have them check it out, but the more hints I can give, the better. Thanks!
I have the same problem with my 2000 SSEi on brand spanking new RSA'*. Brought the tires back a couple of times to be rebalanced and rotated and I still get the same shimmey between 60 MPH and 70 MPH. The higher or lower I go and it goes away.
Now, I am no longer suspecting the tires or wheels at all because I noticed the following while on a long trip. The speed at which the shimmey was felt varied depending on whether I was driving into or with the wind direction. I would be on cruise control feeling the shimmey and as I took a turn away from driving into the wind and the shimmey became significantly less obvious. I continued and turned again even further down wind and the shimmey went away until I spend up to a higher speed. I tested this on varoius windy days and there is definately a connection.
My guess: the shimmey is the result of an aerodynamic problem with my lower front spolier. The found the spoiler to be quite loose -- I can push back on it and it receeds approx an inch before butting up against a frame behind it. I am thinking that at low speeds the spoiler doesn't vibrate beacuse of not enough wind but then at 60 to 70 MPH the wind pressure oscilates the spoiler, but higher speeads yet the spolier gets frimly pushed up against the supporting frame and it does oscilate anymore.
I haven't brought the car in yet to see if the spoiler is too loose (can't stand the thought of bringing my car to the dealer and not sure if Joe mechanic would know how firm the spoiler should be.
I am throwing this out there to see if anyone else suspect the same as I do.