The F10-F13 M5 and M6 have a subframe mounted directly against the chassis. with the regular F10 there are insulating subframe buses in between. This gives the car a very stable rear axle, but less sound insulation from the drivetrain. To compensate for this, the rear differential bushes are made very soft.
The problem with that is that the differential tilts strongly under the power of the M5 and can therefore vibrate under acceleration, the cardan shaft is not resistant against the angle it has to make due to the moving differential.
To solve this we have come up with a fairly inexpensive solution that is easy to install, this kit ensures that the diff initially just hangs softly in the rubbers, but as soon as it has to tilt, this is limited earlier than with the original design. breaking of the rear support is reduced.
The set consists of 2 rings, which are placed in the original rubber .
Installation is quite easy, unscrew the rear diff bolt, lower the back and you just push it in. See fig 3.
Successfully tested on a 700hp M5.
