Replaced original spark plugs on my 2016 S550 with NGK's...

[Bigred911s]

it's my daily driver and just turned 46k miles. 25k of the 46k were on the Lund 93 tune running premium gas.

I installed NGK LTR6IX-11 plugs 6509).

My OEM plugs don't look bad (in my opinion). I attached some pics of the stock plugs I replaced.

Curious on feedback on folks who know how to "read" plugs.

Thanks

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[Bbarfoot14]

Gaps seem consistent, electrodes aren't too bad.

 

[Bigred911s]

I checked the gaps and they were all .052

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