My 460 has a periodic steering vibration after it has set for a period of time. I was told by dealer it was possibly the Bridgestone tires developing a flat spot from not being driven. It sometimes occurs after one hour and sometimes not until after setting for 3-5 days. I have now put Michelin tires on and same thing is happening. I have continually taken it back for balancing and rotation and it still continues to have the periodic vibration. I now have over 50,000 miles on it and still no answer from Lexus dealer or tire dealer.
Anyone else had this problem or have a suggestion?
