I'd email Corbeau and ask whether they fit an E92. I don't see why not ... if they don't fit an E92, what car would they fit?!
Can you get them without the side mounts? Personally I would go for the VAC race seat install kit which comes with the floor and side mounts. Get the slider kit as well.
You can install the seats yourself, which I did with turugara's help but it was a real b#$!%, I highly recommend having VAC do it for you.
Edit: I haven't coded anything out so there's two lights on my dash, seatbelt and an airbag light.
2011 BMW E92 335i, 6MT, M Sport, Le Mans blue - Michelin PSS, Quaife LSD, JRZ RS Pro, JRZ camber plates, Eibach ERS, full M3 susp, custom toe arms, Powergrid end-links, brake ducting, SS brake lines, UUC SSK, ETS FMIC, ER CP, Perf. Exhaust, work by VAC Motorsports