Oh, by the way, in answer to some of the other questions, my vibration started off in that it was about 75-85 and then disappeared. Currently, it is continuous up to 95, which is as fast as I've gone. It doesn't increase in magnitude at 95 anymore then it what it is at 75, that I find peculiar. The vibration began when I had about 63k miles, I know have 74K. I use the heck out of this car (I've put 32K in 15 months which is when I bought it). this is why it's so important to me to eliminate the vibration. So, for those of you that the vibration disappears after 80, this may be a sign of whatâ??s to come (I hope not).

While I agree on the "natural frequency", I can't say this is happening to my car since it wasn't there prior to 60k miles (and two of those tires are the same I have on now).

The Sears alignment numbers can be scanned and provided to you, I'll have to take time to look them up but it gives a before and after alignment numbers with some of the before in red (to be expected after changing struts) and the after all in green. I assure you, if Sears aligned it for the proper car, this wont go anywhere either.

I have stock wheels and stock tire sizes 205/65/15.

How'd one of you tag the 120 mph mark, my car has a speed governor at 111 and it works too!

I appreciate all the comments but thus far I feel I'm going in circles, I mean, I'm sure it's not the tires yet but I'm going to do a tire swap???? Maybe I'm delirious (and long-winded).