BMW quotes a four.1-second sprint to 60, just three tenths off the torquier, extra highly effective, auto-only M4 Competition. The only factor that held it again from scoring a 10 is that our non-Competition mannequin packs 473 horsepower and 406 pound-feet to the Competition's 503 ponies and 479 lb-ft. Even the underpowered Audi RS5 offsets its disappointing 444 hp with 442 lb-ft. You’ll come to quickly respect that capability, as otherwise scrolling via the assorted suspension, exhaust…