Its not engine speed related -- its just load related. I can have the car at 5000rpm on freeway, let off gas and it disappears. Its acceleration only.

I'll start with center support bearing as I already have it in my parts box.

Do I need the 41mm + 46mm wrenches the same as the W123?

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k