[paul223]

I upgraded rear diff bushings to Powerflex street version.

Symptoms - gear shifts felt lazy and rubbery. Clunk jolt/jerk from 2 to 1 gear when coming to stop. When accelerating, response of yourself hitting back of seat was not there.
2013 535i 53xxx miles. PS2 plus full bolt ons.
I also changed diff oil. I followed YouTube diy videos. There are 2. Both show good info.

After installation- nvh is like oem, gear shifts are crisp and acceleration is immediate. Now car is more fun to drive again.
I suggest powerflex over oem. Powerflex bushings can with installed by hand pressing.

Pics of old oem bushings, oil, and special tools.
Now I don't need special tools so I will sell both. We can keep passing these tools to one member to another.