BMW dealerships change which tyre they recommend, more often than they change which oil manufacturer is the flavour of the month.
Get whichever tyre fitted (you don’t have to go to a BMW dealership) you fancy. Then find out how long the front and the rear tyres last for YOU, not me or some other bods on the internet.
PS You never did tell us:
A. How many miles are your tyres (front and back) lasting, before you decide to change them?
B. How many miles do you expect the rear / front to last?