I installed new tires and went to the dealer to have them balanced and an alignment. I also had the engine mounts changed out. The tech called me and said that there was a vibration at around 60 mph. He said after balancing the tires he re-balanced them again to make sure it was not the tires. He said that the driveshaft, where it goes into the transmission was slightly worn and recomended replacing the transmission mount to bring the driveshaft back up a little. (The engine mounts raised the engine about 1-1.5" and changed the driveshaft angle). This healped a little but the vibration is still there. His next recomendation is to change out the driveshaft (very expensive). My question is -- would new flex disk help the situation any? Has anyone else had this problem? Sure feels like an out of balance tire to me.

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1995 S-350
370K + SOLD
1952 220B Cabriolet
39K kilometers + SOLD
1998 E300D
310K +
2012 E350 BlueTec
120K