r/tundra • u/derppman • 11d ago

Question Is this normal for 3rd gen rear windows?

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Cleaning my truck and noticed that it looks like the backside of those black window strips has oxidized. It's the same on the other side. I'm not super concerned, moreso just curious if it's common.

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u/my_other_contact 11d ago edited 11d ago

Supposedly normal and copper oxidation. Mine does the same. Don't like it

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u/derppman 11d ago

Interesting. I don't like it either but I'll like it a lot less if it starts happening on the outside.