Spark Plug Wear

[lsiunsuex]

Switched to NKG spark plugs this afternoon from Adam Tuned -

Attached are the old ones. '16 Ecoboost with about 35k miles.

They look a bit... charred? lol... Just curious if that wear is ok? Bad? Good thing I changed them now?

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[Chef jpd]

Way too many miles on those plugs. You should check the gaps to see how much they opened up.
you should check them at less than 10k miles. Maybe more than that it you are tuned.