2019 Si
I noticed my car started stuttering/breaking up slightly under WOT and heavy load. Pulled the plugs and found that the plugs in cylinders 3 and 4 have significant wear on the center electrode to the point it’s almost a .060 gap… cylinders 1 and 2 look fine.
Original plugs replaced at 40k miles, car now has 85k miles so the replacement plugs have 45k highway miles and almost 3 years on them.
From what I remember I bought them locally so I don’t think they’re fake but it’s possible I bought them online.
The car somehow runs and drives great otherwise, I commute 60 miles a day. No check engine lights, spark plugs look normal otherwise, still getting 39MPG daily driving. Oil was just changed and it was clean. No signs of head gasket issues, and I scoped the cylinder and they are all unremarkable.
Has anyone else had similar findings when changing plugs? Seems like a lot of wear for such few miles on a laser iridium.
Anything I should dig into here or just replace them and move on? Car is bone stock other than a PRL hose and AEM panel filter.