Even 95 RON shouldn't give any concern in a 2009 430S, possibly showing differences in engine wear but only after many, many, many miles. I think something else is wrong, perhaps the tolerances on the valve guides are too big for some reason, or maybe a timing issue (perhaps software fault?).
I tend to use 98 RON when I can find it in my 550 but haven't really noticed any difference with using 95.
+1, neither 95 nor 98 RON should cause this.
your octane sounds fine. Mountains have a diff in O2/air density, so your timing/ECU might be flaky. The RPM sounds good to go for acceleration, where I would state 3K+ is best for such...but not less, which would have been my guess you were doing.
Have the ECUs/ODB checked out.
Try doing this at Sea Level too, as perhaps there might be a diff in pinging.
Jazz and boxer state correctly IMO also...something else in how it is combusting is the probelm especially on this rather new car..
BTW did you say F1 or stick. There is an ECU IIRC for the F1 that might not be doing what is needed. although, the F1 is basically a diff. type of manual shift on the same trans as the stick, there are some other factors there in regards to how it manages a shift: Have it checked out, the RPM and shift parms might not be as advertised.