Just did my first plug change on the
M, 30k miles. It was also my first plug change on a BMW ever, owned a 328 and 335 before this and never touched them. Had three mustangs prior to those, all with extensive mods.
Anyway, total time took me 1.5 hours including a test ride. Used a WIRE HANGER
to remove to coil packs, and it worked like a charm every time
I'll post pics later on. Car runs smoother throughout the rpm band. Had what felt like a "lugging" in the lower rpms prior to this. Power is now smooth and "lug" free.
And my CUSTOM HANGER.