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I put on my H&R sport springs (not the sport +) on my 435d xDrive F32 2015 and it was needed as this car is rather heavy compared to the M4 and the diesel 3-liter, automatic gearbox, xDrive it is near 2000 kg. The original springs are to high, to soft. This works perfect with adaptive suspention. LED/Xenon lights autoadjust height, no need to fiddle with that, but watch out if you change suspension yourself, arms can get cloged backward and lights point into the wazoo then...
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