Is it safe to drive? I can't answer that without being there to inspect it. However, if the tires are badly worn on the inside, I wouldn't suggest driving that fast. The one thing you didn't list above is an alignment. If tie rods were replaced, that should have been done.
As far as the noise, are the tires chopped or worn unevenly? That can cause a hum. And, the shaking is most likely the result of the tires being out of balance.
Since you had this done 4 months ago, I would take it back and discuss it with the people who did the work. I don't know how many miles you have on the tires, but they should last longer than 4 months. Also, they didn't wear evenly which is an alignment problem which should have been addressed when the tie rods were replaced.
Thursday, July 11th, 2013 AT 7:37 PM