Spark plug OEM BMW or BRISK

Brisks are great plugs. Do be warned however, their groundstraps are softer than others and open gap much sooner vs other plugs. So you'll be checking them much more often and changing them sooner than the usual 10-15k tuned interval.

I went to Brisk ER12S a few weeks after going 1+ tune which are one heat range colder, same fitment as MK7.

I had similar problems with mine until I tried stock F80 M3 plugs. Mfg #12120039634KT1. Mine was 07 N54 FBO.

Brisk plugs off Parker performances page. The brisks hold there gap and seem to really last

Guy was gunna charge me $720 USD for changing my serp belt and another $550 USD for changing just my spark plugs. That's $20 for the serpantine/drive belt, $150 for the belt tensioner and I think another like $120ish for spark plugs (B58 engine). So in total I saved myself roughly $1,000 just doing it myself.

I'm running brisk One step colder plugs at 0.024 Gap with my eqt stg 2 tune. they are amazing

Brisk LGS plugs basically remove that L shape off the spark at the end. I would expect it act more like plugs do when we index them to the fuel flow. such that you get a better flow in the combustion chamber more consistently.

I have used Rs7 plugs (meh), the APR recommended NGK plugs (rough idle, gapped correctly), and the Brisk ER12S. I'm on my second set of the Brisk, and plan to keep using them.

would suggest plugs, RS7 or Brisk 12's (cheaper) but coil packs are not needed.

I wouldn't do the Brisk plugs if you're not tracking it hard. They susceptible to fouling up unless you drive it like you stole it every time.