The new M4 features high- and low-temperature cooling circuits to ensure the car's various components maintain their optimal operating temperatures during street and track driving.

BMW's weight loss program included cutting the rear seats (46 lbs), switching to lightweight sound insulation (33 lbs), using interior and exterior carbon-fiber-reinforced plastics (CFRP) components (24 lbs), and installing a titanium rear silencer (9 lbs).

The CSL's standard M Carbon ceramic brakes eliminated another 31.5 pounds, while BMW's extensive use of CFRP for the hood and trunk reduced the coupe's weight by another 3 lbs and 15 lbs, respectively.

Using carbon fiber for the center console cut about 9 lbs, though one of the most significant cuts came from BMW installing M Carbon full bucket seats, which dropped another 53 lbs from the car.

Inside the M4 CLS, you'll find just two lightweight seats, but they are no ordinary BMW seats.

BMW exclusively designed the M Carbon full bucket seats with track driving in mind.

However, BMW will offer heated M Carbon bucket seats with complete power-adjustability as a no-cost option if the standard seats are a bit too extreme.

The M Carbon full bucket seats, trimmed in black Merino leather with red Alcantara inserts, feature pronounced side bolsters, and they come with a fixed-angle backrest.

The lack of rear seats makes space for two helmet storage compartments.