Quicky one... I have a question.
After you had your rims straightened did the car ride smoother on the highway? Especially between 60mph-85mph. I mean, did it have any vibration at these speeds before or after the rims were straightened? I mean, after the job, did you drive the car and say to your self, "oh yeah, I guess they must have been bent after all, because it is smoother now"
I bought the wheels off of a salvage yard and never used them until they were refinished. I mailed them to wheel collision and they made them new again., even taking out the curb rash they had. The car went on 3 800 mile one way road trips and it was very, very smooth.
In my case, with the exception of the convertible, I have never had a trans am that did not vibrate when I bought the car, above 60mph, and particularly bad around 80mph. I always had to correct the problem with new tires and/or wheels. Sometimes it could not be fully cured. I could not stand it. You could see the dashboard shake. THe only way to make it stop was to keep changing the speed constantly. Once a steady speed was maintained, this vibration would set in.
With what I said above, I have never had a car with a vibration like you describe. I also have all of my driveshafts balanced before I drive the car long distances. Maybe that is what your problem is? DontKnow:
I would particularly like to know about this wheel collision center, because it is 10 minutes from me, and I want to buy a used set of gta wheels and have them restored, to use as a second set on my car. (so I don't have to remove the original tires from the original wheels...right now, I have repro wheels for that purpose, but I dont like the idea of driving on chinese wheels...they could fall apart at any moment...I bought them before I realized they were chinese)
If you are 10 minutes from them have the wheels thrown on the machine to see if they are straight. I am sure they would do it free...
My best luck ever was on a new tta after I put new GSC tires. Wheels were obviously new since whole car was new. That car was totally smooth like a bmw running on glass.
Probably not a wheel issue.
(This story is from years ago, before the days of the Hunter road force balance machine, which seems to be able to cure any vibration problem I have had recently.)