cracked subframe

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Yes, thats exactly what happens if you stay with stock bushings.

To use his analogy.

Using the BMW repair = Simply Replacing the coke can with a new one., it just delays the "cracking process" which will inevitably happen.

The point is, to drill and weld the cracks that are there and they will be on nearly all csl with 60.000 miles. Even 316i have this problem, so its not only affecting cars which are driven hard. And reinforce the structure with the plates, whichs point is, to distribute the induced load via a bigger area. But the key thing is, to replace the squishy stock bushings with delrin or even solid ones, to stop the load from even ocurring. Like BMW did with from factory with M3 GTS and F8X M4.

See this video of an Camaro, which has the same issues.