Spark plug NGK or OEM BMW

i run NGK BP6EFS, no issues with them on 2 engines so far

I’ve run NGK platinum and Denso and they both work well.

Anyway, I finally made the effort and took the plunge, choosing the offline method of sourcing the NGK. That aside, the first pull on the throttle, I felt the difference. It was, for lack of a better word, 'softer', an easier pull. The change showed up in various other ways. A smoother ride, easier acceleration, an hour or so later, easier gear shifts and the ability to be in lower RPMs and speeds in higher gears.

The car started to misfire at boost so I swapped plugs to NGK PFR6H-10 and everything is good now.

Don't use Bosch sparksticks.

I use iridium’s NGK haven’t had any issues.

Just replaced my previously purchased NGK Iridium from Rockauto.com After 100k miles the looked like I put them in yesterday.

NGK Laser Iridium is the Honda spec and what I buy and have had no issues for 5x 105k intervals.

I used NGK laser iridium to replace my probably original 256k mile acdelco plugs. Noticed exactly no difference in performance.

Ngk are trash. Go with oem Bosch

Be careful where you buy your plugs. There are counterfeit NGK plugs out there. I found out the hard way. I purchased off of Amazon. Mine melted before I could even get a mile in to my session.