06 4Runner Limited V8. I recently developed a steering vibration at high speeds, had vehicle tires replaced and road force balanced. The problem went away only for a few hours. The next morning, after the vehicle sat, it vibrates awfully again. Had them balanced again, problem went away, vehicle sat overnight again and the problem is back. Drive shaft is balanced, u joints are great. What on earth could this be? I have had all of the front end suspension replaced. Why would this vibration only occur when the vehicle sits? I’m at the end of my rope. Thank you for the help!
Check the tire pressure. You may have a slow leak from a loose valve stem. Squirt some soapy water on them to see if they bubble.
I checked that and there is no leak. I am having the tires replaced again under Michelin warranty. We shall see. I am dumbfounded as to what this could be.
Put the back tires on the front and see if it still does it. If it does, you have a suspension problem. If it doesn't you have a problem with the wheels/tires.