Originally Posted by jmbiro
I have a new update. I picked my car up today. The service manager found that both front tires needed to be replaced, again. They were road force balanced last night and came up with 0.1, today they came up with 0.5 in the cold morning (where I felt the vibration the most). . . . .
Well, its been two days with the new tires and the vibration is starting to come back. The ride was smooth for two days, and now I'm starting to notice the vibration again. I really doubt its in the wheels and rims now.
What is the best way to diagnose axle problems? I've been reading some threads, but haven't found anything definitive. While at speed (70mph), if I shift into neutral, the problem is still there. From this I'd throw away motor mounts. I don't think this throws away the axles. What type of play should I look for to determine a bad axle?
Think about this for a moment: After replacing the tires, like magic the vibration was gone for two days. What does that tell you? IMHO, it tells you that your issue -- as I stated above -- is solely related to the the tires and, more specifically, how they are wearing. If it were otherwise -- i.e., somehow related to any of the other suggestions put forth above -- the vibration would have continued even with new tires. (Why wouldn't it?) It didn't. Thus, the vibration cannot be related to axles, rotors, wheels, bearings, the rotation of the planets, etc.
The vibration, IMHO, is a consequence of how the tires are wearing (see above), resulting in an imbalance, and the cause of the wear is the alignment settings your guys are choosing.
Edit: Several threads, same subject. See e.g., 2012 steering wheel shake