I had my trans replaced with a remanufatured unit under CPO due to the "thunk" downshift problem that occurred while accelerating from a slow roll (California stop). No issues after that other than a nice, smooth shifting trans. My service advisor told me to go easy for about 300 miles. Don't know if they just didn't want the trans learning aggressive shift modes or something else (break-in).

__________________
Kirk
Las Vegas
2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo
2011 E90M3, 6-speed manual