Hi there,
just wondering if any one has any issues with the 8 speed zf transmission on the f30. Mine is a n20 320i. I’ve noticed it has quite a harsh downshift from 5th to 4th. You can really notice the pull when it down shifts. All other gears r smooth! Done 110k. I’ve tried replacing the oil and filter with OEM Stuff there was no metal in the pan and the oil looked pretty good/not burnt. It’s not bad enough for me to want to strip the entire transmission. But was wondering if there’s an easy fix perhaps something I can do the next time I do the oil n filter? No transmission fault codes either!