Phone a main dealer and ask them? Don't need to buy anything. I'm not a Gen 2 person but as far as I'm aware all R56s use the 280mm discs except for the Cooper S. Which has 294mm. I know this because us R53 people fit the R56 S front brakes set up to our R53 Cooper Ss because the standard 276mm are fairly useless. I have exactly that fitted to mine.
But I'm not sure what an 'SD' counts as. What is different to a standard 'D'. Is it a diesel S or a normal D with a few sporty bitzas. Don't know.
This is the post I put up ages ago about fitting the 294mm to the R53 S.
https://www.mini2.com/forum/first-g...3-front-brakes-upgrade-big-brake-options.html
To your question, yes I think some drilled and grooved with decent pads will give improved braking feel, plus they do look nice.
But I'm not sure what an 'SD' counts as. What is different to a standard 'D'. Is it a diesel S or a normal D with a few sporty bitzas. Don't know.
This is the post I put up ages ago about fitting the 294mm to the R53 S.
https://www.mini2.com/forum/first-g...3-front-brakes-upgrade-big-brake-options.html
To your question, yes I think some drilled and grooved with decent pads will give improved braking feel, plus they do look nice.