Healthy Looking Plugs?

[FlyPenFly]

From a 2006 BMW 3.0i N52 engine, Z4 3.0i, 55k miles, I believe original plugs.

Looks a little carbon coated but otherwise healthy?

Putting new ones in today.

Reference:
http://car.exchange.ph/2016/02/20/spark-plug-analysis-tells-you-how-healthy-your-engine-is/

 

[RooflessVW]

I'd say they look as close to perfect as you can expect.

 

[MRtv]

They look good. I'd be happy to see them coming out of my engine. They don't seem to be looking like there is some problem.

 

[maxdustington]

Honestly, I think plugs are more of a diagnostic tool on a non fuel injected engine. Almost every plug post from a modern engine looks very identical or have one or two cylinders that are obviously burning oil. Otherwise, the classic ignoring the rear bank on a transverse V6 or the rears on a longitudinal V8.