Im a very long way off but a M2 comp manual will probably be my next car. I like to do track days and was debating whether or not the BMW big brake option was worth the $. I was thinking the stock brakes might be better with some good pads, fluid and braided lines. This is due to the fact that you could then use a set of lightweight 18" wheels and some nice rubber which will keep weight down and cheaper tyre options The upgraded brakes are quite heavy and you need to use 19" wheels minimum which adds rotational and unsprung weight. Thoughts from fellow track junkies please.