I have the BW front brake bushings. Different people call them different things but I think we're all talking about the same thing
I noticed zero or close to zero change in both M3s.
I tracked each car at least one season with the stock bushing and never had shimmies or weird things happen, but still swapped them out.
The purple diff bushings are a completely different story. Do not do that on a pure street car.
I was convinced by the forum to move to solid subframe bushings and purple diff bushings and holy moly, thank God i only did that on the track car because it would drive me completely bananas on the street one
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