Derlin and Poly subframe/diff bushing NVH question

Potty Mouth · 05-25-2023, 07:52 PM

F22 M235i owner here- I recently upgraded both subframe and diff bushings to Delrin and although it rides on rails now, the whining noise from the diff is too much. Wondering if going to ECS 95 poly diff bushings will eliminate the whining sound or if it's being transferred from the subframe as well and changing out the diff bushings simply won't help. Any advice?

aerobod · 05-25-2023, 09:42 PM

You could always swap just the diff bushings back to OEM and leave the Delrin ones in the subframe, as they will be the most beneficial for handling if that is the main aim of using solid bushings, assuming NVH from a suspension perspective is acceptable.

05-25-2023, 07:52 PM	#1
Potty Mouth Quicker than they think 0 Rep 12 Posts Drives: 2016 BMW M235i Join Date: May 2021 Location: East Coast iTrader: (0)	Derlin and Poly subframe/diff bushing NVH question F22 M235i owner here- I recently upgraded both subframe and diff bushings to Delrin and although it rides on rails now, the whining noise from the diff is too much. Wondering if going to ECS 95 poly diff bushings will eliminate the whining sound or if it's being transferred from the subframe as well and changing out the diff bushings simply won't help. Any advice? Last edited by Potty Mouth; 05-26-2023 at 05:23 PM..
	Appreciate 0 Tweet Quote

05-25-2023, 09:42 PM	#2
aerobod Car Geek 1813 Rep 2,863 Posts Drives: Caterham R400, M2-G87, Macan S Join Date: Mar 2008 Location: Calgary iTrader: (0)	You could always swap just the diff bushings back to OEM and leave the Delrin ones in the subframe, as they will be the most beneficial for handling if that is the main aim of using solid bushings, assuming NVH from a suspension perspective is acceptable.
	Appreciate 0 Quote

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search