Originally Posted by Malek@MRF
The GTS has solid mounts, so does the new M5 (a luxury sedan).
We have installed these at our shop and the increase in harshness is very little, Especially on street compliant suspension and tires.
I heard the GTS has solid subframe bushings (mounts) but have never seen a picture of them. I wonder if they are alloy, delrin or other? They are likely only available from BMW with the complete subframe.
Re the M5, does anyone have pictures of the solid mounts? I should get under a new M5 to see if BMW employed any tricks to tame the NVH when using the solid subframe mounts. Maybe liquid-filled diff mounts
IMO, any E9X M3 that is either driven hard and/or has more power than stock could really benefit from solid subframe mounts. My ESS VT2-625 kit made this issue far more obvious!