Scroll down the page and there is a white e90 on LMs will very aggressive offsets on 295 rears.
The rears that he is trying to fit will be 3mm closer to the fender than the setup w/ LMs. So in that case I would run a 275/285 rear to be safe. Of course you are prolly gonna have to dail in some rear neg camber. I suggested coilovers for those aggressive offsets bc car generally looks akward when it is slightly lowered and has aggressive fitment. To fit your rear wheels you are gonna need a combination of stretched tires and custom alignment.