it has been a while since i really "looked" at it but when the bike was new and i was molesting every square inch, i noticed the axle was alittle smaller than remember other axles being. the axle on my V10 is a TIGHT TIGHT fit. FWIW.DHS said:hmm i don't have that issue with my RL, been running the hadley 12mm 135 in it for 2 years now...
call BMW and tell them
its probably not a big deal. but under the stresses of downhilling on rough stuff at high speed, that abuse is going to exploit any "play" in tolerances.