Originally Posted By: carviewsonic
Just to add.. my 2003 Park Ave now has similar miles to your Solara, and drives as smooth as a new car at highway speeds.. BUT, I've got Michelins with 75% tread remaining, fairly new struts and shocks, new cv axles both sides (steering wheel was wobbling going around corners at lower speeds), new front wheel bearings (one had a bad seal, replaced them both), and new front rotors. I did the work myself, so it kept the cost reasonable. I wasn't chasing a vibration issue, just want to keep the car a few more years, so time for some upkeep. Any one of those items could cause vibration issues, even the struts (if excessively worn).
My point is that it could be hard to track down the vibration source if your car has a few worn components. A good set of tires with an alignment is a good start...
Wow you really did change a lot! Most of the stuff on the front axle is old. Pretty sure the shocks haven't been changed, but again, I don't know anything about the car prior to owning it.