Spark plug NGK or OEM BMW
I run NGK Rutheniums now and they've been excellent handling 30psi of boost with zero blowout even at wider than the .024" gaps that most tuners recommend. Oh and theyre MUCH cheaper at $8/ea vs $40/ea for the NGK race plugs.
I went to colder plugs from ngk and noticed a difference in shift pattern for the better (my car is an auto).
OEM plugs are NGK as well.
I changed my plugs recently and qent with NGK Ruthenium gaped a step colder and they are working well for me, seem better than Motorcraft but thats just my opinion.
I just did the 30k service and my mechanic recommended these plugs. They are expensive, but worth it.
Learned 40 years ago to use NGK. Installed brand new Autolite plugs in my girlfriends Grand Prix and it ran like crap. Went to a speed shop and they sold me a set of NGK. Ran perfectly. Have only bought NGK or Denso since.
I used these in my '19 with no issues.
I replaced the OEM plugs with NGK, they lasted about 15,000 miles. Burger Tuning told me that 15k is about all you'll get out of NGKs in these cars.
Additionally I would endorse the use of a Champion or NGK plug. The LG/Torch/random Chinese plugs are a crap shoot. I see tons of failures on them as well.
I’ve gotten fake NGK on Amazon before it’s very possible
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