2008 with 146,000 miles...steering wheel has intermittent vibration when getting up to 50 and above. Typical behavior is it rides fine, the once i get to speed it vibrates for maybe 30 seconds, then stops, then starts up again, then stops. That cycle just continues.

A bit of background. It has two brand new tires, the other two have about 500 miles on them, if that. The older tires were on the front and I had the techs put them on the back when I got the new ones to see if the new tires would solve the problem. Seems to have made it even worse. Also just had it aligned and replaced the rotors and brakes (needed those anyway).

Any ideas? I’m at a loss at this point.

Thanks in advance.