BMW 3-Series (E90 E92) Forum - View Single Post - What is this rusty nut under the driver seat?

cpie168 · 11-09-2019, 12:10 PM

I have the same rusty nuts under my seats. If I had to take a guess, I think it’s due to the high humidity during winter after the snow from our boots are melted and sitting on the floor mats, not from actual water sitting on it.

11-09-2019, 12:10 PM	#2
cpie168 Major 173 Rep 1,117 Posts Drives: 2010 E90 328i 6MT ZSP BSM Join Date: Mar 2014 Location: K/W and GTA, Ontario, Canada iTrader: (1)	I have the same rusty nuts under my seats. If I had to take a guess, I think it’s due to the high humidity during winter after the snow from our boots are melted and sitting on the floor mats, not from actual water sitting on it.
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