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      10-16-2020, 02:13 AM   #24
Bartledoo
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Drives: 2011 E90 M3 6MT
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Quote:
Originally Posted by tsk94 View Post
Perhaps I'm misunderstanding what you mean by 'spherically mounted'?

A spherical mount is a solid bushing. So even the main lower control arm is NOT spherically mounted as it goes into a non-solid bushing where it is connected to the spindle and the subframe. The same applies for the 3 rear control arms and the trailing arm. The bushings in the control arms are not all solid - spherical/ball-joints are solidly mounted. That's why there are upgrades from SPL and GC for rear arm replacements that are actual spherical ends. The same can be said for the bushings that the main control arm and trailing arm mount to in the subframe and spindle. Those can be replaced with true solid bushings - in the same way the solid subframe bushings are commonly replaced.
It looks like all of the rear arms aside from the trailing arm are spherically mounted to the spindle. If you check the parts diagrams they will be referred to as ball joints.

It looks like all of the mounting to the subframe is via rubber bushings, but I'm not sure about the toe arm in that regard, since it has a ball joint on at least one side and photos show both sides looking identical so it may have ball joints on both sides.

http://bmwfans.info/parts-catalog/E9...el_suspension/

The subframe diagram can be found there too.
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