I have found some semi-circular sections of round thin rubber on the garage floor under my car for the last several months, never could see where they came from or if they even came from my car. Today I licked out and found a section with a MB star and a part number - 129 323 00 32 EKT 2. Any ideas what I should be replacing or repairing, where this came from?

Thanks for any info.

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John

2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)

Click to see 87 300E