I had the OEM winter (rubber) floor mats in my just retired '07 4.8. They were OK but lots of sand/dirt got around them and the small carpet portion looked terrible after 2 years of use.

For the new 35d I decided to get the Weathertech floor liners. They cover more ground and don't have the carpet piece. Together with the black floor (Saddle interior) I think this is going to work better. I also like that the 2nd row covers the middle - I had some water spill once in the old X and it soaked the middle between the rubber mats.

Just be prepared since the WT mats take a couple of weeks to get to you.

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2012 F10 550xi Carbon black/oyster
2011 E92 M3 SSII/black
2012 W166 ML63 Steel grey/porcelain
2007 E93 monaco blue/beige (retired)
2010 E70 35d Space grey/saddle brown (retired)