1. - ARS is a must, you really can tell a difference and as you said feels wobbly; ordered my 09 w/o it and it was a pita to live with so i got rid of it(along with the other problems i had with it)[I was lucky to have gotten on '11 F01 Msport as it was standard with that pack but was later omitted as optional for '12 and beyond as it has been since '09]{The 760 I didn't worry about as it is standard}
2. - Can't answer that sorry
quip - none of the dealers order them with ARS and I do not see why BMW omitted them in the F-series as it was standard in the E-series
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