New rear subframe bushings can make your BMW feel a lot more planted, especially in high power builds. Upgrading to poly or solid will lessen deflection, making you feel more connected to the road and giving you, the BMW enthusiast, a more refined driving experience.
If there is excessive vibration in your cabin or a clunk or knock when going over bumps, the problems may be your subframe bushings. By replacing them with new units, everything will stay tighter and provide a more secure mounting location for your lower control arms, engine, and transmission.
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