Spark plug NGK or OEM BMW

I was told that the Motorcraft iridium's are made by NGK?

I opted for the NGK DIFR6D13, since these were suggested by a local Honda dealership. These seem to be perfectly fine for the CR-Z. No complaints at all.

I've been running the NGK "rs7" plugs 06K905601M in my wagon since I went IS20 with an APR stage 3 91 tune. Stock gap out of the box was .026. I've now put about 6k on them and have had zero issues.

I have NGK ruthenium’s and it is noticeably smoother at idle vs iridium’s. Literally zero idle “pop” or misfires

NGK Iridium gapped at 0.026 only. They’re great

I drive a 01 4runner and I run NGK plugs and wires. Almost 300k on the dash.

No issues with Bosch red coils from Shopdap Bosch Red R8 Ignition Coil for VW Audi 06E905115F - Deutsche Auto Parts (shopdap.com) Spark plugs: NGK Ruthenium HX, #92400.

Got some NGK Ruthenium HX plugs at NAPA this morning. Miss is gone, car runs perfectly again. Plus they're cheaper and supposedly will last longer than the platinums.

I noticed a slight miss at while cruising between 67 and 70mph. I ran VCDS logs and found misfires on cylinders 3 and 4. Imagine my surprise when I pulled the plug for cylinder 3… no signs of any other damage and I have no idea how long it’s been like this. Never got a CEL.

I installed the new NGK Ruthenium HX plugs and so far everything has been great ????

I gapped them at 0.70mm, still the car was not what it was. And at high speed the km go up but there is no pulling like before.