When I am crusing about 70mph the steering is not shaking. But as soon as I put a little turning pressure on the steering wheel it starts shaking. As I turn more it will shake. Sometimes it will smooth out after a long turn. I did have my tires balanced and that did not help. Also, I just installed new slotted rotors so I know the rotor are not warped. Any ideas this is driving me crazy because I drive about 200 miles a day.
I have the same problem and balanced my tires at least 4 times in 10,000 miles. I finally put 4 different tires and rims on temporarily and the vibration was gone. It seems like the RSA'* are causing the problem but I only have 13,000 on them so I can live with it until they wear a little more and I replace them. I don't know if it is the same problem but it might be a good idea to check them.
Sorry for the delayed response. I found out that I was low on power steering fluid. It didn't resolve the problem. Now there is no shaking when I am driving straight. It shakes either way I turn. I would be surprised if it was the alignment because the car drives straight. I forgot to mention about 2 weeks ago I had to have my front passanger side wheel bearing replace. It was making noise. Do they usually do alignments when they do that?
Also, I replaced the Goodyear RSA with Dunlop Sport A2.
Just changing a wheel bearing should not change anything in the alignment unless the car was first aligned with a bent bearing and now the new one is back where it is supposed to be. The dealer also doesn't pay to do an alignment for this unless there is a problem relating to the replacement of the bearing.